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 the hemispherical tank, we will follow these steps:

### Step 1: Understand the problem
We have a hemispherical tank made of iron with a thickness of 1 cm. The inner radius of the tank is given as 1 m. We need to find the volume of the iron used in the tank.

### Step 2: Convert units
Since the thickness is given in centimeters, we should convert the inner radius from meters to centimeters for consistency.
- Inner radius \( r = 1 \, \text{m} = 100 \, \text{cm} \)
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