Question

A circular park of radius 20m has a road of 2m wide all around the outside of the park. Find the area of the road​

Answer 1

radius =20m

Area of the road= area of the outer circle and area of the inner circle

π22²-π20²

π(484-400)

π84

264

area of the road is 264m²

Answer 2

Area of circular park =3.14*400=1256m2

radius of circle forming include road = 20+2=22m

therefore,

area of circle formed=3.14*22*22=1519.76m2

hence,

area of road = area of circle formed-area of circular park

= 1519.76-1256=263.76m2.