Question
What is the difference between the cost of fencing of R
and that of Q?Solution
Perimeter of Q = 2(l + b) = 2 (20 + 40) = 120 m So, cost of fencing of Q = 120 × 30 = Rs 3600 Perimeter of R = 4 × 30 = 120 m So, cost of fencing of R = 120 × 36 = Rs 4320 So, required difference = 4320 – 3600 = Rs 720
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