Question

A road 10m wide surrounds a circular park whose circumference is 352m.find the area of the road

Answer 1

Hello,

Circumference of circle=2×22/7×X
352/2=22/7×X
176×7/22=X
56=X
Radius of circular park=56m
Radius of road=10+56=66m
Area of the road=22/7(square of radius of road-square of radius of park)=22/7[(66×66)-(56×56)]
=22/7(4356-3136)
=22/7×1220
=3834.28 sq.cm

Is the answer correct