Question

A cube has a volume 125 cm³. Area of its one face is
1. 5 cm²
2. 20 cm2
3. 25 cm2
4. 30 cm2

Answer 1

Correct Answer - Option 3 : 25 cm2

Given:

Volume of cube = 125 cm³

Formula used:

Volume of cube = (Side of cube)³

Area of one of its face = (Side of cube)²

Calculations:

Let the side of cube be 'a'

Volume of cube = a³

⇒ a³ = 125 

⇒ a = 5 cm

Area of its one face = a²

⇒ 5 × 5

⇒ 25 cm²

∴ The area of its one face is 25 cm²