A bucket has top and bottom diameters of \( 40 \mathrm{~cm} \) and \( 20 \mathrm{~cm} \) respect...

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A bucket has top and bottom diameters of \( 40 \mathrm{~cm} \) and \( 20 \mathrm{~cm} \) respectively. Find the volume of the bucket if its depth is \( 12 \mathrm{~cm} \). Also, find the cost of tin sheet used for making the bucket at the rate of \( ₹ 1.20 \) per \( \mathrm{dm}^{2} \).
(Use \( \pi=3.14 \) )
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