Question

A circular park is surrounded by a flower bed 1m wide. If radius of the park is 122m find the area of the flower bed.

Answer 1

hey mate!

radius of inner circle=122m
radius of outer circle=122+1=123m

now, area of flower bed=area of outer circle-area of inner circle

area of flower bed=pie*r1^2-pie*r2^2
area of flower bed=pie(r1^2-r2^2)
area of flower bed=pie(122^2-123^2)
area=pie(122-123)(122+123)
area=pie*1*245
area=22*245/7
area=22×35
areaa=770m^2


hope it helped!!