A solid sphere of radius \(24 \ cm\) is melted into a hollow cylinder of uniform thickness. If the external radius of the base of the cylinder is \(25 \ cm\) and its height is \(32 \ cm\), then obtain the thickness of the cylinder.
 
Answer:
 
Volume of the hollow cylinder is given by cu.units.
 
Volume of the sphere is given by cu.units.
 
The internal radius \(r\) of the hollow cylinder \(=\) \(cm\)
 
The thickness of the cylinder \(=\)  \(cm\)