Question

A circular park encloses an area 5544m square . Find the he cost of fencing the park at the rate of ₹20 per metre

Answer 1

Area of circular park=πr^2=5544m^2
=>r^2=5544*7/22
=1764m^2
=>r=sqrt(1764)
=42m
Now we want to fence the park at a cost of ₹20 per metre
Perimeter of park=2πr=2*(22/7)*42
=264m
he cost of fencing the park at the rate of ₹20 per metre =264*20
=5280₹