There was a cylindrical can in the room , it was melted and moulded into 3 equal cones . lf the volume of cylinder is 16 7.75 and the diameter is ½ of 7 . Find the height . Find the volume of each cone and the total surface area of Cylinder & cone . Find the ratio of total surface area and volume of the cylinder and cone .
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A sphere is inscribed in a cylinder
here height of cylinder h=2r
Volume of sphere =
3
4
πr
3
and Volume of cylinder =πr
2
h
=πr
2
(2r)
=2πr
3
Ratio of volume of sphere to volume of cylinder =
3×2πr
3
4πr
3
=2:3
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