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
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5
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
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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.
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