Question

A solid sphere of radius 6cm is melted into a hollow cylinder of unifrom thickness. if the external radius of the base of cylinder is 5cm and

Answer 1

The radius of the solid sphere = 6cmThe outer radius of the cylinder formed =4cmThe height of the cylinder =72cmLet the internal radius be x cmSo, Volume of sphere =Volume of cylinder formed4/3*22/7*6*6*6=22/7*(R^2-r^2)*724/3*216=(16-r^2)*724=(16-r^2)r^2=16-4r^2=12r = 3.46cmThe uniform thickness is R-r 4-3.46= 0.54cm 0.
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