A group of children made a metallic cylinder of radius 7cm and height 10cm . They observed that it was very very heavy . To reduce its weight they drilled a conical hole and completely filled it with a lighter metal . The conical hole has radius 5/2cm and depth 10cm . Compare the ratio of volumes of both the metals in the new solid .
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https://www.meritnation.com/ask-answer/question/a-metallic-cylinder-has-radius-3-cm-and-height-5-cm-to-redu/surface-areas-and-volumes/10166291
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