Q 2. The lid of a rectangular box of sides 40 cm by 10 cm is sealed all round with tape. What is the length of the tape required?
We have,
Length = 40 cm and,
Breadth = 10 cm
So, the length of tape required = perimeter of the rectangular box
= 2 (L + B)
= 2 50 cm
= 100 cm
Hence 100 cm tape is required.