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The volume of a cylinder is pi * r^2 * h, where r is its [#permalink]
13 Nov 2005, 17:31
The volume of a cylinder is pi * r^2 * h, where r is its radius and h is its height.
we have two different cylinders, both cylinders have the same height = 8 cms
but cylinder 1 has a diameter of 4 and cylinder 2 has a diameter of 8.
we melt both cylinders and create a sphere, the volume of the sphere is 4/3*pi*r^3, what is the diameter of the sphere?