Question

The rain water collected on the roof of a building 22m×20, is drained into a cylindrical vessel having Base diameter 2m and height 3.5m. If up to the brim ,Find the height of rain water of the roof .what value depicted ,If we use rain water for drainage purpose?

Answer 1

Let the required rainfall in cm be x

therefore according to the statement of the question, we have

Volume of rain = volume of cylinder

\ \frac{x}{100}\times 22\times 20 =\frac{22}{7}\times 1\times 1\times 3.5


x=\ \frac{22}{7}\times \frac{1\times 1\times 3.5\times 100}{22\times 20}
=2.5m


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