In geometry, a unit cube is a cube whose each side is 1 unit long.
Volume of a unit cube:
A cube has all its sides of the same length. A unit cube has all its sides of length 1 unit. So, the
volume of a unit cube = Side × Side × Side
= 1unit × 1unit × 1unit
= 1 cubic unit
If a solid shape is made using unit cubes, then the volume of the shape is equal to the number of unit cubes that make up the shape.
This solid is made of 6 unit cubes.
Surface Area of a Unit Cube
A cube has 6 square faces. A unit cube has 6 square faces with each side 1 unit long. So, the area of each side of the cube = 1 unit × 1 unit = 1 square unit
As all 6 faces of a cube have the same area,
The surface area of a unit cube = 6 × area of one face
= 6 × 1 square unit
= 6 square units
Fun Facts
