Mathematics
The area of a playground is 3650 m2. Find the cost of covering it with gravel 1.2 cm deep, if the gravel costs ₹ 6.40 per cubic metre.
Mensuration
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Answer
Given:
Area of playground = 3650 m2
Depth of gravel = 1.2 cm = 0.012 m
Cost of gravel = ₹ 6.40 per cubic metre
Volume of Gravel Needed = Area of playground x Depth
= 3,650 x 0.012 m3
= 43.8 m3
Total cost of the gravel = Volume of Gravel Needed x Cost per cubic metre
= 43.8 x 6.40
= ₹ 280.32
Hence, the cost of covering the playground with gravel is ₹ 280.32.
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