Question

A closed metal box measures 30 cm × 20 cm × 10 cm. Thickness of the metal is 1cm. The volume of the metal required to make the box is

Options

• 1041 cm³

• 6000 cm³

• 4536 cm³

• 1968 cm³

Answer 1

1968 cm³ 

Explanation:

Metal required to make box

= External volume V₁ - Internal volume V₂

= V₁ - V₂ = 30 × 20 × 10 - 28 × 18 ×8

= 6000 - 4032 = 196 cm³    ...(since thickness is 1 cm each side)