Question

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The cost of fencing a Square park at the rate of Rs.20 per metre is Rs.24000.Find the cost of levelling the park at Rs.35 per 100m².​

Answer 1

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Total cost of fencing = Rs.24000

Rate of fencing = Rs.20 per metre

$perimeter \: of \: the \: square \: park = \frac{total \: cost \: of \: fencing}{rate \: of \: fencing} = \\ \frac{rs \: 2400}{rs \: 20 \: per \: metre} = 1200 \: m$

$length \: of \: each \: side \: of \: park = \frac{perimeter}{4} = \frac{1200 \: m \: }{4} = 300 \: m$

Area of the square park = side x side = 300 m x 300 m = 90000 m²

Cost of levelling 100 m² = Rs.35

Cost of levelling 1 m² = Rs.35/100

Cost of levelling 90000 m² = Rs.35/100 x 90000 = Rs.31500

Hence the cost of levelling the park is rs 31500.

Answer 2

Answer:

rupees 2880

The total cost of fencing a square park at rupees 20 per meter is rupees 2880