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The lateral surface of a cylinder is equ...

The lateral surface of a cylinder is equal to the curved surface of a come. If the radius be the same, find the ratio of the height of the cylinder and slant height of the cone.

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given
lateral surface of a cylinder is`=` the curved surface of a cone
`2piRh=pirl`
so `2h=l`(given that R`=r`)
so `h:l=1:2`
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