Question

the radius of circular garden is 100m.there is a road 10m wide,running all around it.find the area of the road and the cost of levelling it at rs 20 per m^2. (take root 3=1.73)​

Answer 1

Area of road = π[100^2 - 10^2]

                     = 3.14[9900]

                     = 31086 m^2

Hence, Cost of levelling = 20*31086 = Rs. 621720

Answer 2

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