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Radius of a cylinder is equal to its hei...

Radius of a cylinder is equal to its height. If the radius is taken as 'r', volúme of the cylinder is 'pi r^2 times r=pi r^3' Like this find the volumes of the solids, with the following. measures.
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a) What is the ratio of the volumes of cone, hemisphere, cylinder and the sphere?
b) A solid metal sphere of radius. 6 centimetres is melted and recast into solid cones of radius 6 centimetres and height 6 centimetres. Find the number of cones.

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