Question

It costs rs. 936 to fence a square field at rs.7.80 per metre. Find the cost of levelling the field at rs. 2.50 per square metre.

Answer 1

Total money for fencing = Rs. 936

Rate of fencing = Rs 7.80 / m

Perimeter of field = length of wire used

=> 4 * side = $\frac{Total money}{Rate}$

=> 4 * side = $\frac{936}{7.8}$

=> side = 120 / 4

=> side = 30 m

Area of square field = side*side

                                 = 30 m * 30 m

                                 = 900 $m^{2}$

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