Question

A circular Park of radius 20m has a road of 2m wide around the outside of the park. find the area of the road

Answer 1

The road around the circular park is in a shape of a ring
So area of tht road=area of the big circle which includes the road and the park-area of the park
=πR²-πr²
R=20+2=22
r=20
=π484-π400
=π(484-400)
=84π is the area
=84*22/7
=264m² is the area of the road