Question
A rectangular field is 40 m long and 25 m wide. Find the
cost of fencing it three times all around at the rate of Rs. 12 per metre.Solution
Perimeter of rectangle = 2(L + B) = 2(40 + 25) = 2 × 65 = 130 m Length of fencing for 3 rounds = 3 × 130 = 390 m Cost = 390 × 12 = 4680 Answer: Rs. 4680
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