Question

The volume of a cube with lateral surface area 100 cm² is ______ .

• A. 125 cm³
• B. 100 ${\text{cm}}^3$
• C. 150 ${\text{cm}}^3$
• D. 120 ${\text{cm}}^3$

Answer 1

The correct option is A 125 cm³

Lateral surface area = 4a² = 100.

Thus, a² = 25 ⇒ a = 5 cm.

Hence, Volume = $a^3$ = (5)³ = 125 cm³