a container opened from the top and made up of a metal sheet is in the form of frustum of a cone of height 16cm with radii of its tower and upper ends as 8cm and 20 cm respectively. find the cost of the milk which can be completely fill the container, at rate of rupees 20per liters. also find the cost of metal sheet use to make the container, if it costs rupees 8per 100cm2
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bhai pata nah google se puch le or phir batade
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I don't know.
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