Question

An open rectangular wooden box measures

21 cm x 11 cm x 7 cm
It is made from wood 0.5 cm thick.
Find the capacity of the box.

Answer 1

• 1300 cm³

Explanation:

Internal dimensions of the box will be smaller considering the thickness of the wood:

• 21 - 1 = 20 cm
• 11 - 1 = 10 cm
• 7 - 0.5 = 6.5 cm (open top)

The volume is now:

• 20*10*6.5 = 1300 cm³