We know that,1cm = 0.01mTherefore,Volume of the gravel used = Area × Height= 3750 × 0.01= 37.5 m3It is given in the question that cost of the gravel is Rs. 6.40 per cubic meterTherefore,Total cost of covering = (37.5 × 6.4)= Rs. 240

Q. 44.6( 82 Votes )

The area of a cou

Class 8th RS Aggarwal - Mathematics 20. Volume and Surface Area of Solids

Answer :

We know that,

1cm = 0.01m

Therefore,

Volume of the gravel used = Area × Height

= 3750 × 0.01

= 37.5 m³

It is given in the question that cost of the gravel is Rs. 6.40 per cubic meter

Therefore,

Total cost of covering = (37.5 × 6.4)

= Rs. 240

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