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2 cm of rain has fallen on a square km of land. Assuming that 50% of the raindrops could have been collected and contained in a pool having a 100 m × 10 m base, by what level would the water level in the pool have increased?
Answer & Solution
Correct Answer:
Option
B
Let the increase in level = $$x$$ m
$$\eqalign{ & \Rightarrow \left( {1000 \times 1000 \times \frac{2}{{100}}} \right) \times \frac{1}{2} = 100 \times 10 \times x \cr & \Rightarrow x = 10{\text{ m}} \cr} $$
$$\eqalign{ & \Rightarrow \left( {1000 \times 1000 \times \frac{2}{{100}}} \right) \times \frac{1}{2} = 100 \times 10 \times x \cr & \Rightarrow x = 10{\text{ m}} \cr} $$
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