The height and the base diameter of a conical tomb are \( 24 \mathrm{~m} \) and \( 14 \mathrm{~m...

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The height and the base diameter of a conical tomb are \( 24 \mathrm{~m} \) and \( 14 \mathrm{~m} \), respectively. Find the cost of white-washing its curved surface at the rate of \( ₹ 210 \) per 100 sq \( \mathrm{m} \). Also, find volume of air inside the tomb.
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