Question

The area of a playground is 4800 m². Find the cost of covering it with gravel 1 cm deep, if the gravel costs ₹ 4.80 per cubic meter.

Answer 1

Given:

Area of playground = 4800 m².

Depth of gravel = 1 cm = 0.01 m.

Cost of gravel = ₹ 4.80 per m³.

Step-wise calculation:

1. Volume of gravel required

= Area × Depth

= 4800 m² × 0.01 m

= 48 m³

2. Total cost

= Volume × Cost per m³ 

= 48 × ₹ 4.80 

= ₹ 230.40

The cost of covering the playground is ₹ 230.40.