{"id":14118,"date":"2022-12-04T03:42:25","date_gmt":"2022-12-04T03:42:25","guid":{"rendered":"https:\/\/www.splashlearn.com\/math-vocabulary\/?page_id=14118"},"modified":"2024-01-23T08:41:37","modified_gmt":"2024-01-23T08:41:37","slug":"what-is-the-circumference-of-the-earth-calculation-examples","status":"publish","type":"post","link":"https:\/\/www.splashlearn.com\/math-vocabulary\/circumference-of-the-earth","title":{"rendered":"What is the Circumference of the Earth? Calculation, Examples"},"content":{"rendered":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\tMath-Vocabulary\n<\/span><\/div>\n\n<div class=\"ub_table-of-contents\" data-showtext=\"show\" data-hidetext=\"hide\" data-scrolltype=\"auto\" id=\"ub_table-of-contents-e1231288-2564-4584-8ec9-5b2eb4e4659b\" data-initiallyhideonmobile=\"false\"\n                    data-initiallyshow=\"true\"><div class=\"ub_table-of-contents-extra-container\"><div class=\"ub_table-of-contents-container ub_table-of-contents-1-column \"><ul><li><a href=https:\/\/www.splashlearn.com\/math-vocabulary\/circumference-of-the-earth#0-circumference-of-the-earth-introduction>Circumference of the Earth: Introduction<\/a><\/li><li><a href=https:\/\/www.splashlearn.com\/math-vocabulary\/circumference-of-the-earth#1-what-is-the-circumference-of-the-earth>What Is the Circumference of the Earth?<\/a><\/li><li><a href=https:\/\/www.splashlearn.com\/math-vocabulary\/circumference-of-the-earth#3-circumference-of-earth-at-equator>Circumference of Earth at Equator<\/a><\/li><li><a href=https:\/\/www.splashlearn.com\/math-vocabulary\/circumference-of-the-earth#11-solved-examples>Solved Examples<\/a><\/li><li><a href=https:\/\/www.splashlearn.com\/math-vocabulary\/circumference-of-the-earth#12-practice-problems>Practice Problems<\/a><\/li><li><a href=https:\/\/www.splashlearn.com\/math-vocabulary\/circumference-of-the-earth#13-frequently-asked-questions>Frequently Asked Questions<\/a><\/li><\/ul><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"0-circumference-of-the-earth-introduction\">Circumference of the Earth: Introduction<\/h2>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Earth is the third planet from the sun and also the fifth-largest planet in the solar system. The term \u201ccircumference\u201d commonly refers to the length of the boundary of a circle, but Earth is almost spherical in shape. So, what do we mean by the circumference of a sphere? Let&#8217;s find out.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full eplus-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"620\" height=\"436\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/the-circumference-of-earth.png\" alt=\"The circumference of Earth\" class=\"wp-image-37544\" title=\"The circumference of Earth\" srcset=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/the-circumference-of-earth.png 620w, https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/the-circumference-of-earth-300x211.png 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"1-what-is-the-circumference-of-the-earth\">What Is the Circumference of the Earth?<\/h2>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Although a sphere does not have a circumference, it has circular cross-sections, whose circumference can be calculated. Since the length of the radius varies as we move away from the sphere\u2019s center, it is crucial to know which cross-section determines the circumference of the sphere. For that, you need to first determine the sphere\u2019s great circle.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full eplus-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"620\" height=\"375\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/center-radius-diameter-and-great-circle-of-a-sphere.png\" alt=\"Center, radius, diameter and great circle of a sphere\" class=\"wp-image-37543\" title=\"Center, radius, diameter and great circle of a sphere\" srcset=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/center-radius-diameter-and-great-circle-of-a-sphere.png 620w, https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/center-radius-diameter-and-great-circle-of-a-sphere-300x181.png 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading eplus-wrapper\" id=\"2-great-circle-\"><strong>Great Circle<\/strong><\/h3>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">The largest circle that can be created around a sphere is called a great circle. Every sphere has a great circle. A great circle is a cross section of a sphere that contains a diameter of the sphere. A sphere will be split perfectly in half if you cut it at one of its great circles. A great circle has the same center point and circumference as that of a sphere.&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">The Earth also has many great circles. One of them is its equator. The Earth\u2019s own radius is the radius of the great circle.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full eplus-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"620\" height=\"315\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/equator-is-the-great-circle-of-earth.png\" alt=\"Equator is the great circle of Earth\" class=\"wp-image-37542\" title=\"Equator is the great circle of Earth\" srcset=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/equator-is-the-great-circle-of-earth.png 620w, https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/equator-is-the-great-circle-of-earth-300x152.png 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/figure>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">The circumference of the great circle defines the sphere\u2019s circumference.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Mathematically, the circumference of any great circle of a sphere = 2\u03c0R or \u03c0D,<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">where \u201cR\u201d is the sphere\u2019s radius and \u201cD\u201d is its diameter.<\/p>\n\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"3-circumference-of-earth-at-equator\">Circumference of Earth at Equator<\/h2>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Do you know the Sun\u2019s tremendous gravitational pull and Earth\u2019s rotation causes it to bulge at the equator? This makes it somewhat of a squashed sphere.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full eplus-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"620\" height=\"400\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/earth-s-shape.png\" alt=\"Earth\u2019s shape\" class=\"wp-image-37541\" title=\"Earth\u2019s shape\" srcset=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/earth-s-shape.png 620w, https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/earth-s-shape-300x194.png 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/figure>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Earth, as we know now, is an oblate spheroid, as shown in the above figure. So, its circumference varies depending on how you calculate it.&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">At the equator, the radius of Earth is 3963 miles (Diameter = 7926 miles).<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Earth\u2019s polar radius is 3950 miles (Diameter = 7900 miles).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full eplus-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"629\" height=\"438\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/polar-and-equatorial-circumference-of-the-earth.png\" alt=\"Polar and Equatorial circumference of the Earth\" class=\"wp-image-37540\" title=\"Polar and Equatorial circumference of the Earth\" srcset=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/polar-and-equatorial-circumference-of-the-earth.png 629w, https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/polar-and-equatorial-circumference-of-the-earth-300x209.png 300w\" sizes=\"auto, (max-width: 629px) 100vw, 629px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading eplus-wrapper\" id=\"4-circumference-of-the-earth-in-meters-\"><strong>Circumference of the Earth in Meters<\/strong><\/h3>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">When measured around the equator, the <strong>circumference of the Earth<\/strong> is 40.075 million meters.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">On the other hand, it is 40.008 million meters when measured from the North Pole to the South Pole.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading eplus-wrapper\" id=\"5-circumference-of-the-earth-in-kilometers-km-\"><strong>Circumference of the Earth in Kilometers (km)<\/strong><\/h3>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">When measured around the equator, the <strong>circumference of the Earth<\/strong> is 40,075 km.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">It is 40,008 km when measured from the North Pole to the South Pole.<\/p>\n\n\n\n<h3 class=\"wp-block-heading eplus-wrapper\" id=\"6-circumference-of-the-earth-in-miles-\"><strong>Circumference of the Earth in Miles<\/strong><\/h3>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">When measured around the equator, the <strong>circumference of the Earth<\/strong> is roughly 24,902 miles, whereas it is approximately 24,860 miles from the north pole to the South Pole.<\/p>\n\n\n\n<h3 class=\"wp-block-heading eplus-wrapper\" id=\"7-circumference-of-the-earth-in-feet-\"><strong>Circumference of the Earth in Feet<\/strong><\/h3>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">When measured around the equator, the <strong>circumference of the Earth<\/strong> is 131,477,280 feet.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">It is 131,260,800 feet when measured from the North Pole to the South Pole.<\/p>\n\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"8-method-to-calculate-the-earth%E2%80%99s-circumference\">Method to Calculate the Earth\u2019s Circumference<\/h2>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">We can use a mathematical formula to find the <strong>circumference of the Earth<\/strong>&nbsp;as follows:&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>Circumference of Earth at the equator (CE)<\/strong>:<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">CE = \u03c0 \u00d7 D<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 3.14 \u00d7 7926 &nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 24,887.64 miles (which is close to 24,901 miles)<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>Circumference of Earth around the poles (CP)<\/strong>:<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">CP = \u03c0 \u00d7 D<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 3.14 \u00d7 7900&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 24,806 miles<\/p>\n\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"9-fun-facts\">Fun Facts<\/h2>\n\n\n\n<ul class=\"eplus-wrapper wp-block-list\">\n<li class=\"eplus-wrapper\">&nbsp;Earth\u2019s shape, caused by the flattening at the poles, is known as an oblate spheroid. So, its diameter at the equator is bigger than that at its polar regions.<\/li>\n<\/ul>\n\n\n\n<ul class=\"eplus-wrapper wp-block-list\">\n<li class=\"eplus-wrapper\">The average distance between the Sun and Earth is 92,935,700 miles.<\/li>\n<\/ul>\n\n\n\n<ul class=\"eplus-wrapper wp-block-list\">\n<li class=\"eplus-wrapper\">The diameter of the Sun is 109 times as great as Earth\u2019s diameter.<\/li>\n<\/ul>\n\n\n\n<ul class=\"eplus-wrapper wp-block-list\">\n<li class=\"eplus-wrapper\">One of the ways of calculating the circumference is the geometric method employed more than 2000 years ago. It was used by Eratosthenes, the chief librarian of Alexandria in Egypt, to calculate the <strong>circumference of the Earth<\/strong> in 200 BCE. He arrived at the estimated figure of 28,738 miles. It is fairly close to the real value of 24,901 miles.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full eplus-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"620\" height=\"352\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/eratothenes.png\" alt=\"Eratothenes\" class=\"wp-image-37539\" title=\"Eratothenes\" srcset=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/eratothenes.png 620w, https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/eratothenes-300x170.png 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"10-conclusion\">Conclusion<\/h2>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">The <strong>circumference of the Earth<\/strong> varies depending on the length of its diameter at the equator and the poles. It is about 40,075 km around the equator and about 40,008 km from the North Pole to the South Pole.&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">The Greek mathematician Eratosthenes first calculated the Earth\u2019s circumference&nbsp;with the help of a well, sunrays, and a stick. Now, it is calculated using the mathematical formula of 2\u03c0R or \u03c0D<strong>.<\/strong><\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Knowing how to calculate Earth\u2019s circumference is important because it serves as a base for understanding complex circumference problems in higher classes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"11-solved-examples\">Solved Examples<\/h2>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>1. What is the circumference of the planet Venus if its diameter is 7520.8 miles? (Take \u03c0 as 3.14.)<\/strong><\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>Solution:<\/strong> The diameter of Venus = 7520.8 miles&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Circumference (C) = \u03c0 D.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Now, by substituting the value of diameter (D) in the formula, we will get&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">C = 3.14 \u00d7 7520.8 = 23,615.31<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Therefore, the circumference of Venus = 23,615.31 miles.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>2. Find the circumference of the Sun, assuming that its diameter is 865,370 miles. (Use 3.14 as the value of \u03c0.)<\/strong><\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>Solution:<\/strong> Diameter of the Sun = 865,370 miles<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Circumference (C) = \u03c0 D&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Circumference of the Sun = 3.14 \u00d7 865,370 = 2,717,261.8&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Therefore, the circumference of the Sun = 2,717,261.8 miles.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>3. Calculate the radius of the Earth if its circumference is 24,887.64 miles. (Take \u03c0 as 3.14.)<\/strong><\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>Solution:<\/strong> The formula for circumference (C) = \u03c0D or 2\u03c0R&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Given, C = 24,887.64&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">2\u03c0R = 24,887.64&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Therefore, the radius of Earth (R) = 24,887.642 3.14 = 3963 miles.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>4. Find the circumference of a soccer ball whose great circle has a diameter of 15 inches.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full eplus-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"245\" height=\"245\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/a-soccer-ball.png\" alt=\"A soccer ball\" class=\"wp-image-37538\" title=\"A soccer ball\" srcset=\"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/a-soccer-ball.png 245w, https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/a-soccer-ball-150x150.png 150w, https:\/\/www.splashlearn.com\/math-vocabulary\/wp-content\/uploads\/2024\/01\/a-soccer-ball-120x120.png 120w\" sizes=\"auto, (max-width: 245px) 100vw, 245px\" \/><\/figure>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>Solution:<\/strong>&nbsp; The circumference (C) of the soccer ball will be:<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">C = \u03c0D&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">= 3.14 \u00d7 15<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">= 47.1 inches<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Therefore, the circumference of the soccer ball = 47.1 inches.<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>5. The radius of a circular pizza is 30 inches. Find its circumference.<\/strong><\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><strong>Solution:<\/strong>&nbsp; Circumference of a circle (C) = \u03c0D<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">D = 2R&nbsp;<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">By using the above formulas, we will get,<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">D = 2 x 30 = 60 inches<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">C = 3.14 x 60 = 188.4 inches<\/p>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Therefore, the circumference of the pizza is 188.4 inches.<\/p>\n\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"12-practice-problems\">Practice Problems<\/h2>\n\n\n\n<p class=\"eplus-wrapper wp-block-paragraph\"><div class=\"spq_wrapper\"><h2 style=\"display:none;\">What is the Circumference of the Earth? Calculation, Examples<\/h2><p style=\"display:none;\">Attend this quiz & Test your knowledge.<\/p><div class=\"spq_question_wrapper\" data-answer=\"2\"><span class=\"spq_question_header\"><span class=\"sqp_question_number\">1<\/span><h3 class=\"sqp_question_text\">The ratio of the circumference of Jupiter to the Earth is given as 10:1. What will be the ratio of the diameter of the Earth to Jupiter?<\/h3><\/span><div class=\"spq_answer_block\" data-value=\"0\">5:1<\/div><div class=\"spq_answer_block\" data-value=\"1\">2:1<\/div><div class=\"spq_answer_block\" data-value=\"2\">10:1<\/div><div class=\"spq_answer_block\" data-value=\"3\">8:1<\/div><div class=\"sqp_question_hint\"><div class=\"sqp_question_hint__header\"><span class=\"spq_correct\">Correct<\/span><span class=\"spq_incorrect\">Incorrect<\/span><\/div><div class=\"sqp_question_hint__content\"><span>Correct answer is: 10:1<br\/>Circumference $= \u03c0D$<br>\r\nRatio of circumferences $= \u03c0D$$\\text{(Jupiter):\u03c0D(Earth)} = 10:1$<br>\r\nTherefore, ratio of diameters $= D$$\\text{(Jupiter):D(Earth)} = 10:1$<br><\/span><\/div><\/div><\/div><div class=\"spq_question_wrapper\" data-answer=\"0\"><span class=\"spq_question_header\"><span class=\"sqp_question_number\">2<\/span><h3 class=\"sqp_question_text\">The circumference of the Earth in miles is $\\underline{}$<\/h3><\/span><div class=\"spq_answer_block\" data-value=\"0\">24,860<\/div><div class=\"spq_answer_block\" data-value=\"1\">24,870<\/div><div class=\"spq_answer_block\" data-value=\"2\">24,880<\/div><div class=\"spq_answer_block\" data-value=\"3\">24,890<\/div><div class=\"sqp_question_hint\"><div class=\"sqp_question_hint__header\"><span class=\"spq_correct\">Correct<\/span><span class=\"spq_incorrect\">Incorrect<\/span><\/div><div class=\"sqp_question_hint__content\"><span>Correct answer is: 24,860<br\/>Earth\u2019s circumference in miles is roughly 24,860.<\/span><\/div><\/div><\/div><div class=\"spq_question_wrapper\" data-answer=\"2\"><span class=\"spq_question_header\"><span class=\"sqp_question_number\">3<\/span><h3 class=\"sqp_question_text\">At the equator, the radius of the Earth is<\/h3><\/span><div class=\"spq_answer_block\" data-value=\"0\">3900 miles<\/div><div class=\"spq_answer_block\" data-value=\"1\">4963 miles<\/div><div class=\"spq_answer_block\" data-value=\"2\">3963 miles<\/div><div class=\"spq_answer_block\" data-value=\"3\">4963 miles<\/div><div class=\"sqp_question_hint\"><div class=\"sqp_question_hint__header\"><span class=\"spq_correct\">Correct<\/span><span class=\"spq_incorrect\">Incorrect<\/span><\/div><div class=\"sqp_question_hint__content\"><span>Correct answer is: 3963 miles<br\/>At the equator, the radius of Earth is 3963 miles.<\/span><\/div><\/div><\/div><div class=\"spq_question_wrapper\" data-answer=\"1\"><span class=\"spq_question_header\"><span class=\"sqp_question_number\">4<\/span><h3 class=\"sqp_question_text\">The circumference of the Earth at the equator (CE) is $\\underline{}$ .<\/h3><\/span><div class=\"spq_answer_block\" data-value=\"0\">24,801 miles<\/div><div class=\"spq_answer_block\" data-value=\"1\">24,901 miles<\/div><div class=\"spq_answer_block\" data-value=\"2\">133,477,280 feet<\/div><div class=\"spq_answer_block\" data-value=\"3\">137,477,280 feet<\/div><div class=\"sqp_question_hint\"><div class=\"sqp_question_hint__header\"><span class=\"spq_correct\">Correct<\/span><span class=\"spq_incorrect\">Incorrect<\/span><\/div><div class=\"sqp_question_hint__content\"><span>Correct answer is: 24,901 miles<br\/>The circumference of the Earth at the equator (CE) is approximately 24,901 miles.<\/span><\/div><\/div><\/div><div class=\"spq_question_wrapper\" data-answer=\"3\"><span class=\"spq_question_header\"><span class=\"sqp_question_number\">5<\/span><h3 class=\"sqp_question_text\">The diameter of the bigger circle is 9 times the circumference of the smaller circle with a radius of 5 feet. Calculate the circumference of the bigger circle.<\/h3><\/span><div class=\"spq_answer_block\" data-value=\"0\">$90\u03c0$ feet<\/div><div class=\"spq_answer_block\" data-value=\"1\">$180\u03c0$ feet<\/div><div class=\"spq_answer_block\" data-value=\"2\">$180\u03c0^2$ feet<\/div><div class=\"spq_answer_block\" data-value=\"3\">$90\u03c0^2$ feet<\/div><div class=\"sqp_question_hint\"><div class=\"sqp_question_hint__header\"><span class=\"spq_correct\">Correct<\/span><span class=\"spq_incorrect\">Incorrect<\/span><\/div><div class=\"sqp_question_hint__content\"><span>Correct answer is: $90\u03c0^2$ feet<br\/>Circumference (C) $= 2\u03c0$R<br>\r\nC (smaller circle) $= 2 \\times 5 \\times \u03c0$ feet $= 10\u03c0$ feet.<br>\r\nD (bigger circle) $= 9 \\times$ $\\text{C} \\text{(smaller circle)} = 9 \\times 10\u03c0$ feet $= 90\u03c0$ feet.<br>\r\nC (bigger circle) $= 90\u03c0 \\times \u03c0 = 90\u03c0^2$ feet.<\/span><\/div><\/div><\/div><\/div>  <script type=\"application\/ld+json\">{\n        \"@context\": \"https:\/\/schema.org\/\", \n        \"@type\": \"Quiz\", \n        \"typicalAgeRange\": \"3-11\",\n        \"educationalLevel\":  \"beginner\",\n        \"assesses\" : \"Attend this quiz & Test your knowledge.\",\n        \"educationalAlignment\": [\n              {\n                \"@type\": \"AlignmentObject\",\n                \"alignmentType\": \"educationalSubject\",\n                \"targetName\": \"Math\"\n              }] ,\n        \"name\": \"What is the Circumference of the Earth? Calculation, Examples\",        \n        \"about\": {\n                \"@type\": \"Thing\",\n                \"name\": \"What is the Circumference of the Earth? Calculation, Examples\"\n        },  \n        \"hasPart\": [{\n                    \"@type\": \"Question\",   \n                    \"eduQuestionType\": \"Multiple choice\",\n                    \"learningResourceType\": \"Practice problem\",\n                    \"name\": \"The ratio of the circumference of Jupiter to the Earth is given as 10:1. What will be the ratio of the diameter of the Earth to Jupiter?\",\n                    \"text\": \"The ratio of the circumference of Jupiter to the Earth is given as 10:1. What will be the ratio of the diameter of the Earth to Jupiter?\",\n                    \"comment\": {\n                      \"@type\": \"Comment\",\n                      \"text\": \"Circumference $$= \u03c0D$$<br>\r\nRatio of circumferences $$= \u03c0D$$$$\\\\text{(Jupiter):\u03c0D(Earth)} = 10:1$$<br>\r\nTherefore, ratio of diameters $$= D$$$$\\\\text{(Jupiter):D(Earth)} = 10:1$$<br>\"\n                    },\n                    \"encodingFormat\": \"text\/html\",\n                    \"suggestedAnswer\": [ {\n                                \"@type\": \"Answer\",\n                                \"position\": 0,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"5:1\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Circumference $$= \u03c0D$$<br>\r\nRatio of circumferences $$= \u03c0D$$$$\\\\text{(Jupiter):\u03c0D(Earth)} = 10:1$$<br>\r\nTherefore, ratio of diameters $$= D$$$$\\\\text{(Jupiter):D(Earth)} = 10:1$$<br>\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 1,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"2:1\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Circumference $$= \u03c0D$$<br>\r\nRatio of circumferences $$= \u03c0D$$$$\\\\text{(Jupiter):\u03c0D(Earth)} = 10:1$$<br>\r\nTherefore, ratio of diameters $$= D$$$$\\\\text{(Jupiter):D(Earth)} = 10:1$$<br>\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 3,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"8:1\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Circumference $$= \u03c0D$$<br>\r\nRatio of circumferences $$= \u03c0D$$$$\\\\text{(Jupiter):\u03c0D(Earth)} = 10:1$$<br>\r\nTherefore, ratio of diameters $$= D$$$$\\\\text{(Jupiter):D(Earth)} = 10:1$$<br>\"\n                                    }\n                                }],\n                    \"acceptedAnswer\": {\n                      \"@type\": \"Answer\",\n                      \"position\": 2,\n                      \"encodingFormat\": \"text\/html\",\n                      \"text\": \"10:1\",\n                      \"comment\": {\n                          \"@type\": \"Comment\",\n                          \"text\": \"Circumference $$= \u03c0D$$<br>\r\nRatio of circumferences $$= \u03c0D$$$$\\\\text{(Jupiter):\u03c0D(Earth)} = 10:1$$<br>\r\nTherefore, ratio of diameters $$= D$$$$\\\\text{(Jupiter):D(Earth)} = 10:1$$<br>\"\n                        },\n                      \"answerExplanation\": {\n                        \"@type\": \"Comment\",\n                        \"text\": \"Circumference $$= \u03c0D$$<br>\r\nRatio of circumferences $$= \u03c0D$$$$\\\\text{(Jupiter):\u03c0D(Earth)} = 10:1$$<br>\r\nTherefore, ratio of diameters $$= D$$$$\\\\text{(Jupiter):D(Earth)} = 10:1$$<br>\"\n                      }\n                    } \n\n                    },{\n                    \"@type\": \"Question\",   \n                    \"eduQuestionType\": \"Multiple choice\",\n                    \"learningResourceType\": \"Practice problem\",\n                    \"name\": \"The circumference of the Earth in miles is $$\\\\underline{}$$\",\n                    \"text\": \"The circumference of the Earth in miles is $$\\\\underline{}$$\",\n                    \"comment\": {\n                      \"@type\": \"Comment\",\n                      \"text\": \"Earth\u2019s circumference in miles is roughly 24,860.\"\n                    },\n                    \"encodingFormat\": \"text\/html\",\n                    \"suggestedAnswer\": [ {\n                                \"@type\": \"Answer\",\n                                \"position\": 1,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"24,870\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Earth\u2019s circumference in miles is roughly 24,860.\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 2,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"24,880\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Earth\u2019s circumference in miles is roughly 24,860.\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 3,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"24,890\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Earth\u2019s circumference in miles is roughly 24,860.\"\n                                    }\n                                }],\n                    \"acceptedAnswer\": {\n                      \"@type\": \"Answer\",\n                      \"position\": 0,\n                      \"encodingFormat\": \"text\/html\",\n                      \"text\": \"24,860\",\n                      \"comment\": {\n                          \"@type\": \"Comment\",\n                          \"text\": \"Earth\u2019s circumference in miles is roughly 24,860.\"\n                        },\n                      \"answerExplanation\": {\n                        \"@type\": \"Comment\",\n                        \"text\": \"Earth\u2019s circumference in miles is roughly 24,860.\"\n                      }\n                    } \n\n                    },{\n                    \"@type\": \"Question\",   \n                    \"eduQuestionType\": \"Multiple choice\",\n                    \"learningResourceType\": \"Practice problem\",\n                    \"name\": \"At the equator, the radius of the Earth is\",\n                    \"text\": \"At the equator, the radius of the Earth is\",\n                    \"comment\": {\n                      \"@type\": \"Comment\",\n                      \"text\": \"At the equator, the radius of Earth is 3963 miles.\"\n                    },\n                    \"encodingFormat\": \"text\/html\",\n                    \"suggestedAnswer\": [ {\n                                \"@type\": \"Answer\",\n                                \"position\": 0,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"3900 miles\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"At the equator, the radius of Earth is 3963 miles.\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 1,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"4963 miles\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"At the equator, the radius of Earth is 3963 miles.\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 3,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"4963 miles\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"At the equator, the radius of Earth is 3963 miles.\"\n                                    }\n                                }],\n                    \"acceptedAnswer\": {\n                      \"@type\": \"Answer\",\n                      \"position\": 2,\n                      \"encodingFormat\": \"text\/html\",\n                      \"text\": \"3963 miles\",\n                      \"comment\": {\n                          \"@type\": \"Comment\",\n                          \"text\": \"At the equator, the radius of Earth is 3963 miles.\"\n                        },\n                      \"answerExplanation\": {\n                        \"@type\": \"Comment\",\n                        \"text\": \"At the equator, the radius of Earth is 3963 miles.\"\n                      }\n                    } \n\n                    },{\n                    \"@type\": \"Question\",   \n                    \"eduQuestionType\": \"Multiple choice\",\n                    \"learningResourceType\": \"Practice problem\",\n                    \"name\": \"The circumference of the Earth at the equator (CE) is $$\\\\underline{}$$ .\",\n                    \"text\": \"The circumference of the Earth at the equator (CE) is $$\\\\underline{}$$ .\",\n                    \"comment\": {\n                      \"@type\": \"Comment\",\n                      \"text\": \"The circumference of the Earth at the equator (CE) is approximately 24,901 miles.\"\n                    },\n                    \"encodingFormat\": \"text\/html\",\n                    \"suggestedAnswer\": [ {\n                                \"@type\": \"Answer\",\n                                \"position\": 0,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"24,801 miles\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"The circumference of the Earth at the equator (CE) is approximately 24,901 miles.\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 2,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"133,477,280 feet\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"The circumference of the Earth at the equator (CE) is approximately 24,901 miles.\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 3,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"137,477,280 feet\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"The circumference of the Earth at the equator (CE) is approximately 24,901 miles.\"\n                                    }\n                                }],\n                    \"acceptedAnswer\": {\n                      \"@type\": \"Answer\",\n                      \"position\": 1,\n                      \"encodingFormat\": \"text\/html\",\n                      \"text\": \"24,901 miles\",\n                      \"comment\": {\n                          \"@type\": \"Comment\",\n                          \"text\": \"The circumference of the Earth at the equator (CE) is approximately 24,901 miles.\"\n                        },\n                      \"answerExplanation\": {\n                        \"@type\": \"Comment\",\n                        \"text\": \"The circumference of the Earth at the equator (CE) is approximately 24,901 miles.\"\n                      }\n                    } \n\n                    },{\n                    \"@type\": \"Question\",   \n                    \"eduQuestionType\": \"Multiple choice\",\n                    \"learningResourceType\": \"Practice problem\",\n                    \"name\": \"The diameter of the bigger circle is 9 times the circumference of the smaller circle with a radius of 5 feet. Calculate the circumference of the bigger circle.\",\n                    \"text\": \"The diameter of the bigger circle is 9 times the circumference of the smaller circle with a radius of 5 feet. Calculate the circumference of the bigger circle.\",\n                    \"comment\": {\n                      \"@type\": \"Comment\",\n                      \"text\": \"Circumference (C) $$= 2\u03c0$$R<br>\r\nC (smaller circle) $$= 2 \\\\times 5 \\\\times \u03c0$$ feet $$= 10\u03c0$$ feet.<br>\r\nD (bigger circle) $$= 9 \\\\times$$ $$\\\\text{C} \\\\text{(smaller circle)} = 9 \\\\times 10\u03c0$$ feet $$= 90\u03c0$$ feet.<br>\r\nC (bigger circle) $$= 90\u03c0 \\\\times \u03c0 = 90\u03c0^2$$ feet.\"\n                    },\n                    \"encodingFormat\": \"text\/html\",\n                    \"suggestedAnswer\": [ {\n                                \"@type\": \"Answer\",\n                                \"position\": 0,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"$$90\u03c0$$ feet\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Circumference (C) $$= 2\u03c0$$R<br>\r\nC (smaller circle) $$= 2 \\\\times 5 \\\\times \u03c0$$ feet $$= 10\u03c0$$ feet.<br>\r\nD (bigger circle) $$= 9 \\\\times$$ $$\\\\text{C} \\\\text{(smaller circle)} = 9 \\\\times 10\u03c0$$ feet $$= 90\u03c0$$ feet.<br>\r\nC (bigger circle) $$= 90\u03c0 \\\\times \u03c0 = 90\u03c0^2$$ feet.\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 1,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"$$180\u03c0$$ feet\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Circumference (C) $$= 2\u03c0$$R<br>\r\nC (smaller circle) $$= 2 \\\\times 5 \\\\times \u03c0$$ feet $$= 10\u03c0$$ feet.<br>\r\nD (bigger circle) $$= 9 \\\\times$$ $$\\\\text{C} \\\\text{(smaller circle)} = 9 \\\\times 10\u03c0$$ feet $$= 90\u03c0$$ feet.<br>\r\nC (bigger circle) $$= 90\u03c0 \\\\times \u03c0 = 90\u03c0^2$$ feet.\"\n                                    }\n                                }, {\n                                \"@type\": \"Answer\",\n                                \"position\": 2,\n                                \"encodingFormat\": \"text\/html\",\n                                \"text\": \"$$180\u03c0^2$$ feet\",\n                                \"comment\": {\n                                    \"@type\": \"Comment\",\n                                    \"text\": \"Circumference (C) $$= 2\u03c0$$R<br>\r\nC (smaller circle) $$= 2 \\\\times 5 \\\\times \u03c0$$ feet $$= 10\u03c0$$ feet.<br>\r\nD (bigger circle) $$= 9 \\\\times$$ $$\\\\text{C} \\\\text{(smaller circle)} = 9 \\\\times 10\u03c0$$ feet $$= 90\u03c0$$ feet.<br>\r\nC (bigger circle) $$= 90\u03c0 \\\\times \u03c0 = 90\u03c0^2$$ feet.\"\n                                    }\n                                }],\n                    \"acceptedAnswer\": {\n                      \"@type\": \"Answer\",\n                      \"position\": 3,\n                      \"encodingFormat\": \"text\/html\",\n                      \"text\": \"$$90\u03c0^2$$ feet\",\n                      \"comment\": {\n                          \"@type\": \"Comment\",\n                          \"text\": \"Circumference (C) $$= 2\u03c0$$R<br>\r\nC (smaller circle) $$= 2 \\\\times 5 \\\\times \u03c0$$ feet $$= 10\u03c0$$ feet.<br>\r\nD (bigger circle) $$= 9 \\\\times$$ $$\\\\text{C} \\\\text{(smaller circle)} = 9 \\\\times 10\u03c0$$ feet $$= 90\u03c0$$ feet.<br>\r\nC (bigger circle) $$= 90\u03c0 \\\\times \u03c0 = 90\u03c0^2$$ feet.\"\n                        },\n                      \"answerExplanation\": {\n                        \"@type\": \"Comment\",\n                        \"text\": \"Circumference (C) $$= 2\u03c0$$R<br>\r\nC (smaller circle) $$= 2 \\\\times 5 \\\\times \u03c0$$ feet $$= 10\u03c0$$ feet.<br>\r\nD (bigger circle) $$= 9 \\\\times$$ $$\\\\text{C} \\\\text{(smaller circle)} = 9 \\\\times 10\u03c0$$ feet $$= 90\u03c0$$ feet.<br>\r\nC (bigger circle) $$= 90\u03c0 \\\\times \u03c0 = 90\u03c0^2$$ feet.\"\n                      }\n                    } \n\n                    }]}<\/script><\/p>\n\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"13-frequently-asked-questions\">Frequently Asked Questions<\/h2>\n\n\n<div class=\"wp-block-ub-content-toggle\" id=\"ub-content-toggle-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\" data-mobilecollapse=\"true\" data-desktopcollapse=\"true\">\n<div class=\"wp-block-ub-content-toggle-accordion\">\n                <div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" aria-expanded=\"false\" aria-controls=\"ub-content-toggle-panel-0-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\" tabindex=\"0\">\n                    <p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\"><strong>What is the meaning of pi (\u03c0)?<\/strong><\/p><div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span>\n                    <\/div><\/div><div role=\"region\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-0-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\">\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Pi is an irrational number that denotes the ratio of the circumference of a circle to its diameter. Along with the diameter, it helps in calculating the <strong>average circumference of the Earth<\/strong>.<\/p>\n\n<\/div><\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\">\n                <div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" aria-expanded=\"false\" aria-controls=\"ub-content-toggle-panel-1-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\" tabindex=\"0\">\n                    <p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\"><strong>What is a diameter?<\/strong><\/p><div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span>\n                    <\/div><\/div><div role=\"region\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-1-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\">\n\n<p class=\"eplus-wrapper wp-block-paragraph\">Diameter refers to a segment that passes through the center of a sphere or circle from one side to the other.<\/p>\n\n<\/div><\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\">\n                <div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" aria-expanded=\"false\" aria-controls=\"ub-content-toggle-panel-2-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\" tabindex=\"0\">\n                    <p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\"><strong>What is the meaning of a radius?<\/strong><\/p><div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span>\n                    <\/div><\/div><div role=\"region\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-2-ebcbd8ff-8c03-4fbe-ab37-e1390ae20cbc\">\n\n<p class=\"eplus-wrapper wp-block-paragraph\">A radius refers to a straight line from the center of a sphere or a circle to its surface or circumference.<\/p>\n\n<\/div><\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-heading eplus-wrapper\" id=\"14-related-article-links\">Related Article Links<\/h2>\n\n\n\n<ul class=\"eplus-wrapper wp-block-list\">\n<li class=\"eplus-wrapper\"><a href=\"https:\/\/www.splashlearn.com\/math-vocabulary\/measurements\/kilometer\">Kilometer (km)<\/a>&nbsp;<\/li>\n\n\n\n<li class=\"eplus-wrapper\"><a href=\"https:\/\/www.splashlearn.com\/math-vocabulary\/measurements\/centimeter\">Centimeter (cm)<\/a>&nbsp;<\/li>\n\n\n\n<li class=\"eplus-wrapper\"><a href=\"https:\/\/www.splashlearn.com\/math-vocabulary\/measurements\/meter-m\">Meter (m)<\/a>&nbsp;<\/li>\n\n\n\n<li class=\"eplus-wrapper\"><a href=\"https:\/\/www.splashlearn.com\/math-vocabulary\/geometry\/sphere\">Sphere<\/a>&nbsp;<\/li>\n\n\n\n<li class=\"eplus-wrapper\"><a href=\"https:\/\/www.splashlearn.com\/math-vocabulary\/geometry\/circle\">Circle<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Circumference of the Earth: Introduction Earth is the third planet from the sun and also the fifth-largest planet in the solar system. The term \u201ccircumference\u201d commonly refers to the length of the boundary of a circle, but Earth is almost spherical in shape. So, what do we mean by the circumference of a sphere? Let&#8217;s &#8230; <a title=\"What is the Circumference of the Earth? Calculation, Examples\" class=\"read-more\" href=\"https:\/\/www.splashlearn.com\/math-vocabulary\/circumference-of-the-earth\" aria-label=\"More on What is the Circumference of the Earth? Calculation, Examples\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-14118","post","type-post","status-publish","format-standard","hentry","category-all"],"featured_image_src":null,"author_info":{"display_name":"Mithun Jhawar","author_link":"https:\/\/www.splashlearn.com\/math-vocabulary\/author\/mithun-jhawarsplashlearn-com\/"},"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/posts\/14118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/comments?post=14118"}],"version-history":[{"count":12,"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/posts\/14118\/revisions"}],"predecessor-version":[{"id":37545,"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/posts\/14118\/revisions\/37545"}],"wp:attachment":[{"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/media?parent=14118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/categories?post=14118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.splashlearn.com\/math-vocabulary\/wp-json\/wp\/v2\/tags?post=14118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}