What is the volume of a cube whose surface area is 96?

A 50

B 64

C 72

D 86

Correct Answer: Option B

ঘনটির surface area = 6 × a² = 96
=> a² = 96 ÷ 6 = 16
=> a = √16 = 4

ঘনটির আয়তন = a³ = 4 × 4 × 4 = 64