Question

The perimeter of one face of a cube is 20 cm. Its volume must be:

• A. 125 cm³
• B. 400 cm³
• C. 1000 cm³
• D. 8000 cm³
• E. 7900 cm³

Answer 1

The correct option is A

125 cm³

Edge of the cube = $\left(\frac{20}{4}\right)$cm = 5 cm $\therefore$Volume = (5 $\times$ 5 $\times$ 5) cm${}^3$ = 125 cm${}^3$