Question

The perimeter of face of a cube is 20 cm. Find the volume of cube.

• A. $125{\text{cm}}^3$
• B. $120{\text{cm}}^3$
• C. $135{\text{cm}}^3$
• D. $145{\text{cm}}^3$

Answer 1

The correct option is A $125{\text{cm}}^3$

Given, perimeter of face of a cube is 20 cm.
All the faces of a cube are square in shape.
$\because$ Perimeter of a square = 4 x side
$\Rightarrow$ 4 x side = 20 cm
$\Rightarrow$ side = 5 cm
$\text{Volume of cube}={\text{side}}^3$
$=5^3$
$=125{\text{cm}}^3$