4m 77. A bucket made up of a metal sheet is in the form of a frustum of a cone of height 16 cm with diameters of its lower and upper ends as 16 cm and 40 cm respectively. Find the volume of the bucket. Also find the cost of the bucket it the cost of metal sheet used is rs 20 per
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volume=31349.16
cost of metal sheet =626995.2
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