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प्रश्न
A swimming pool is 250 m long and 130 m wide. 3250 cubic metres of water is pumped into it. Find the rise in the level of water.
उत्तर
\\text { [Length of the pool = 250 m }\]
\[\text { Breadth of the pool = 130 m }\]
\[\text { Also, it is given that 3250 m^3 of water is poured into it . } \]
\[\text { i . e . , volume of water in the pool = 3250 }m^3 \]
\[\text { Suppose that the height of the water level is h m } . \]
\[\text {Then, volume of the water = length } \times \text { breadth }\times\text { height }\]
\[ \Rightarrow 3250 = 250 \times 130 \times h\]
\[ \Rightarrow 3250 = 32500 \times h\]
\[ \Rightarrow h = \frac{3250}{32500} = 0 . 1 m\]
\[ \therefore \text { The water level in the tank will rise by 0 . 1 m } .\]
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