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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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Answer» Area = (13.86 x 10000) m2 = 138600 m2 . πR2 = 138600 (R)2 = (138600 x (7/22)) R = 210 m. Circumference = 2πR = (2 x (22/7) x 210) m = 1320 m. Cost of fencing = Rs. (1320 x 4.40) = Rs. 5808 |
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