Question

The area of a courtyard is 3750 m2. Find the cost of covering it with gravel to a height of 1 cm if the gravel costs 6.40 per cubic metre.

Answer 1

Area of courtyard $=3750m^2$

Height of gravel =1 cm.

$\therefore$ Volume of gravel $=3750\times \frac{1}{100}{m}^3$

$=37.50m^3$

Cost of $1m^3$ gravel =Rs.6.40

$\therefore$ Total cost =Rs.6.40 $\times$ 37.50

=Rs.240