A cylindrical piece of maximum volume has to be cut out of an iron cube of edge 4 cm. then, the maximum volume of the iron cylinder is??
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https://www.meritnation.com/ask-answer/question/a-cylindrical-cake-of-maxi-volume-is-to-be-cut-out-of-a-cub/surface-areas-and-volumes/1622878
https://www.meritnation.com/ask-answer/question/a-cylindrical-cake-of-maxi-volume-is-to-be-cut-out-of-a-cub/surface-areas-and-volumes/1622878