Question

If a 20 m long rope is used to cover the boundary of a field twice, the perimeter of the field is m.

• A. 10
• B. 20
• C. 40

Answer 1

The correct option is A 10

Length of the rope = 20 m
It encloses the field twice, it means half of the rope encloses the field once.
Length of half of the rope
= Half of 20 m = 10 m
It implies that the perimeter of the field is 10 m.