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A bucket made up of a metal sheet is in the form of frustum of a cone. Its depth is 24 cm and the diameters of the top and bottom are 30 cm and 10 cm respectively. Find the cost of milk which can completely fill the bucket at the rate of 20 per litre and the cost of metal sheet used if it costs 10 per 100 cm². [Use π = 3.14.]
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A bucket made up of a metal sheet is in the form of frustum of a cone. Its depth is 24 cm and the diameters of the top and bottom are 30 cm and 10 cm respectively. Find the cost of milk which can completely fill the bucket at the rate of 20 per litre and the cost of metal sheet used if it costs 10 per 100 cm². [Use π = 3.14.]
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