Question

A 36-m-long,15-m-broad verandah is to be paved with stones, each measuring 6 dm by 5 dm. How many stones will be required?

Answer 1

Length of a verandah = 36 m = 360 dm (1 m = 10 dm)

Breadth of a verandah = 15 m = 150 dm

Area of verandah= 360 $\times$ 150 = 54000 $d{m}^2$

Length of a stone = 6 dm
The breadth of a stone = 5 dm

Area of stone = 6 $\times$ 5 = 30 $d{m}^2$

Total stones need to pave the verandah $=\frac{\text{area of verandah}}{\text{area of stone}}=\frac{54000}{30}=1800$