Question
A cone a hemisphere and a cylinder stand on equal bases and have the same height . Find the ratio of their volumes.
Answer: Option A
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Let R be the radius of each
Height of hemisphere = its radius = R
`:.` Height of each = R.
Ratio volumes = `1/3 pi R^2 xx R : 2/3 pi R^3 : pi R^2 xx R `
= 1 : 2 : 3
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