Question

The cost of levelling and turfing a square lawn tennis ground at rupees 5 metre square is rupees 2205 find its perimeter and hence find the cost of fencing it whose railings at rupees 200 per metre

Answer 1

Cost of levelling = Rs 2205
Rate of levelling = Rs 5 per m square
Area of the field = 2205 ÷ 5
= 441 m square
Let length of a side be a
${a}^{2} = 441 \\a = \sqrt{441} \\ a = 21 \: cm$
Perimeter = 4a
= 4×21
= 84 cm