Question

the area of courtyard is 3750 m square find the cost of covering it with gravel to height of 1 cm if the gravel cost 6. 40 rupees per cubic metre

Answer 1

Height of gravel= 1cm = 0.01 m

Volume of gravel used = Area of courtyard×Height of gravel
=3750×0.01
=37.50m³

So,
Cost of covering field with gravel=
Rs6.40 × 37.50
=
$\frac{64}{10?} \times \frac{375}{10?}$
=Rs240