a circular Park surmounted by road 21 m wide if the radius the park is 105 M find the area of the Road
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Radius of the circular park(inner circle)=105m
Radius of outer circle=radius of circular park+width of the road=105+21=226m
Area of ring(road)=π(R+r)(R-r)
=22/7(226+105)(226-105)
=22/7(331)(121)
=125874.571mpower2
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