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A dome of a building is in the form of a...

A dome of a building is in the form of a hemisphere. From inside, it was white ¬ washed at the cost of Rs 498.96. If the cost of white-washing is at the rate of Rs 2.00 per square metre, find the volume of the air inside the dome.

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The correct Answer is:
`523 . 9 m^(3)` (approx)
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