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Question

__________ times the volume of a cone is equal to the volume of a cylinder having height and radius same as that of the cone.


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Solution

Find the number of times the volume of a cone is equal to the volume of a cylinder.

Let the number of times be n

Given that, the radius of the cone = radius of the cylinder =r

And, the height of the cone = height of the cylinder =h

The volume of the cone of radius r and height h=13πr2h

The volume of the cylinder of radius r and height h=πr2h

We have, n×Volumeofthecone=Volumeofthecylinder

n×13πr2h=πr2hn=3

Therefore, the required number is three.

Hence, three times the volume of a cone is equal to the volume of a cylinder having height and radius same as that of the cone.


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