Question

Find the cost of digging a cubodial pit 8 m long, 6 m broad and 3 m deep at the rate of Rs 30 per $m^3.$

Answer 1

Length of pit (l) = 8 m

Width (b) = 6 m

and depth (h) = 3 m

$\therefore \text{Volume of earth dug out}=lbh$

$=8\times 6\times 3=144m^3$

Cost of digging the pit at the rate of Rs 30 per $m^3$

$=144\times 30=Rs4320$