Question

The radius of a circular field is 20m not inside it runs a 500 metre wide all around find the area of the path take pi is equal to

Answer 1

radius of circular field =500

Radius of circular field with path=500+20=520m

area of circular path=pi{(R)^2--(r)^2]

=pi {(520)^2--(500)^2]

=pi (520+500)(520--500)

=pi×1020×200

=204000 pi m^2