The cost of fencing a square lawn at RS. 14 per metre is RS. 28000. Find the cost of mowing the lawn at RS. 54 per 100 m2.
Given:
Rate = RS. 14 per metre
Total Cost = RS. 28000
Rate of mowing = RS. 54 per 100 m2
Let the side of square field be s
Now,
= 2000 m
Perimeter = 4 × side
⇒ 2000 m = 4 × s
⇒ s = 500 m
Now,
Area = side2
= (500 m) 2
= 250000 m2
Therefore,
Cost of mowing 100 m2 = Rs 54
= Rs 135000