A right circular cylinder of radius  cm and height
 cm and height  cm (where, h>2r) just encloses a sphere of diameter
 cm (where, h>2r) just encloses a sphere of diameter
As the sphere just encloses in a cylinder,
The diameter of sphere will be equal to diameter of cylinder.
Diameter of base of cylinder = 2(radius of base) = 2r
So, Dance of sphere = 2r cm