Question

Rainfall in an area is 5 cm. The volume of the water that falls on 2 hectares of land is
(a) 100 m³
(b) 10 m³
(c) 1000 m³
(d) 10000 m³

Answer 1

(c) 1000 m³
Volume of water that falls on 2 hectares of land$=\left(\text{Area of the ground}\times \text{Amount of rain in m}\right)$
$$\begin{gathered} =\left(2\times 1000\times \frac{5}{100}\right){\text{m}}^3\left(\text{∵5 cm =}\frac{5}{100}\text{m , 2 heactares =}2\times 1000{\mathrm{m}}^2\right) \\ =1000{\text{m}}^3 \end{gathered}$$