Question

The cost of cultivating a rectangular field at the rate of rupees 5 per square metre is rupees 2880. If the length of the field is 32 m, find the cost of fencing the field at the rate of rupees 11.25 per mt.​

Answer 1

Answer:

$l \times b \times 5 = 2880 \\ b = \frac{2880}{5 \times 32} \\ b = 18m \\ \\ perimeter \: of \: field \\ = 2(l + b) \\ = 2(32 + 18) \\ = 2 \times 50 = 100m \\ \\ cost \: of \: fencing \\ = 100 \times 11.25 \\ = 1125rupees$

Answer 2

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