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# A dome of a building is in the form of a hemisphere. The total cost of white washing it from inside, was '1330.56. The rate at which it was white washed is '3 per square metre. Find the volume of the dome approximately

Hint:

### Volume of hemisphere is .

## The correct answer is: 38492.55m3

### Explanation:

- We have given total cost of white washing the dome is 1330.56
- We have to find the volume of dome.

We have given total cost of white washing the dome is 1330.56

And the rate of white washing is 3 per square meter

So, The surface area of the dome is

= 443.52m^{2}

We know that white washing is only done on curved surface area

So,

Now the volume of dome will be

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