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whose7, The cost of feneing a circular field at the rate of24 per meter is 5280. Find the cost ofemploughing this field at rate of t 0.50 per meter |
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Answer» Length of the fence (in metres) = Total cost / Rate = 5280/24 = 220 So, circumference of the field = 220 m Therefore, if r metres is the radius of the field, then 2πr = 220 or, 2 × 22/7× r = 220 or, r = (220 × 7)/(2 × 22) = 35 i.e., radius of the field is 35 m. Therefore, area of the field = πr2 = 22/7 × 35 × 35 m2 = 22 × 5 × 35 m2 Now, cost of ploughing 1 m2 of the field = Rs 0.50 So, total cost of ploughing the field = Rs 22 × 5 × 35 × 0.50 = Rs 1925 Like my answer if you find it useful! |
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