the circumferenc of a circular park is 314m.a 20m wide concrete track runs round it calculate the cost laying turf in the park at 1.25 per meter square and the cost of concrete track at 1.25 meter square
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Find Inner r by applying formula
r= circumference/2pi
Then
R=r+width
Then Area of track = pi(Rsq-rsq)
Then
Cost=Area x Rate
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