Question

A gardener wants to finish a circular garden of diameter 42 m find the length of the barbed wire he needs to purchase if he makes 30 rounds of the fence

Answer 1

Radius =21 m
Circumference_=22/7*2*21=132
No. Of rounds=30
Total length=132*30=3960m

Hope this helps

Answer 2

diameter is 42m
circumference =2πr
A/q
=22/7*42
=132m
Total rounds=30
total length of barbed wire =132*30
=3960m ANS