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A dome of a building is in the form of a hemisphere. From inside, it was white-washedat the cost of Rs 498.96. If the cost of white-washing is Rs 2.00 per square metre, findthe(i) inside surface area of the dome, (ii) volume of the air inside the dome.

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Cost of white wash(CSA)=Rs498.46
`1m^2=Rs2`
CSA of hemisphere=249.48`m^2`
`2pir^2=249.48`
`r^2=36.69`
`r=6.057m`
Volume of air inside=Volume of hemisphere
=`2/3pir^3`
=`2/3*22/7*(6.05)^2`
=`465.627m^3`

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