Question

The cost of fencing a square lawn at ₹ 14 per metre is ₹ 2800. Find the cost of mowing the lawn at ₹ 54 per 100 m².

Answer 1

Given:

Cost of fencing = ₹ 14 per metre; Total fencing cost = ₹ 2800.

Cost of mowing = ₹ 54 per 100 m².

Step-wise calculation:

1. Perimeter of square = Total fencing cost ÷ Rate

= 2800 ÷ 14

= 200 m

2. Side of square = Perimeter ÷ 4

= 200 ÷ 4

= 50 m

3. Area of square = side² 

= 50²

= 2500 m²

4. Number of 100 m² units

= 2500 ÷ 100

= 25

5. Cost of mowing = 25 × 54

= ₹ 1350

The cost of mowing the lawn is ₹ 1350.