Answer-The area of a circular field is 13.86 hectares. Find the cost of fencing it at the rate of Rs. 4.40...

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By using the above formula, the area of the field  r2  13.86  10000  227r2  138600  r2  722  138600  r2  44100  r  210 m Length of circular field  2r Length of circular field  2  227  210  1320 m. Hence, the cost of fencing it at the rate of Rs. 4.40 per meter  1320  4.4  5808  The cost of fencing is Rs. 5808.

The area of a circular field is 13.86 hectares. Find the cost of fencing it at the rate of Rs. 4.40 per metre.

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