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# A hemispherical bowl is made of steel of 0.25 cm thickness. The inner radius of the bowl is 5 cm. Find the volume of steel used.

Hint:

### Volume of hemisphere is .

## The correct answer is: 41.265cm3

### Explanation:

- We have given a hemispherical bowl is made of steel of 0.25 cm thickness. The inner radius of the bowl is 5 cm.
- We have to find the volume of the steel

We have given thickness of steel is 0.25cm

Inner radius is equal to 5cm

So, Outer radius is equal to 5 + 0.25 = 5.25cm

Outer Volume of the hemisphere will be

Inner volume will be

Therefore, the volume of steel used will be

Inner volume will be

Therefore, the volume of steel used will be

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