In a rain water harvesting system the rain water form a roof of 22 m `xx` 20m drains in to a cylindrical tank having diameter of base 2m and height 3.5 m . If the tank is full find the rainfall in cm . Write your views on water conservation .

Explanation

To solve the problem of finding the rainfall in cm that fills a cylindrical tank from a cuboidal roof, we will follow these steps:

### Step 1: Calculate the Volume of Water Collected from the Roof
The volume of water collected from the roof can be calculated using the formula for the volume of a cuboid:
\[ \text{Volume of water} = \text{Length} \times \text{Width} \times \text{Height} \]
Given:
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