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The radius of a circular garden is 100m....

The radius of a 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)`. [Use `p=3.14`]

Text Solution

Verified by Experts

The correct Answer is:
`6594m^(2),Rs. 131880`
Area of the road `=pi(R^(2)-r^(2))`
`=3.14xx{(110)^(2)-(100)^(2)}m^(2)`
`=(3.14xx210xx10)m^(2)=6954m^(2)`
Cost of levelling `=Rs.(6594xx20)=Rs. 131880`
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