Question:
In a shower, 5 cm of rain falls. What is the volume of water that falls on 2 hectares of ground?
(a) 500 m3
(b) 750 m3
(c) 800 m3
(d) 1000 m3
Solution:
(d) $1000 \mathrm{~m}^{3}$
Area of the land $=2 \mathrm{sq}$ hec $=2000 \mathrm{sq} \mathrm{m}$
Amount of rainfall $=5 \mathrm{~cm}=0.05 \mathrm{~m}$
$\therefore$ Volume of the water $=$ area of the land $x$ amount of rainfall
$=2000 \times 0.05$
$=1000 \mathrm{~m}^{3}$