A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m,then find the volume of the iron used to make the tank

Explanation

To find the volume of the iron used to make a hemispherical tank with a thickness of 1 cm and an inner radius of 1 m, we can follow these steps:

### Step 1: Identify the inner radius and thickness
- The inner radius \( r_1 \) is given as 1 m.
- The thickness of the iron sheet is 1 cm, which we need to convert to meters.

**Hint:** Remember to convert all measurements to the same unit for consistency.

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