Question

The total surface area of a cube is 150 cm². Its volume is 

A. 216 cm³ 

B. 125 cm³ 

C. 64 cm³ 

D. 1000 cm³

Answer 1

We know that, 

Total surface area of cube = 6a² 

6a² = 150 cm²

a = \(\sqrt{\frac{150}{6}}\)

a = \(\sqrt{25}\)

a = 5 cm 

Therefore, 

Volume of the cube = a³ = 5³ = 125 cm³ 

Hence, option B is correct