Question

A right circular cylinder of radius r and height h (h > 2r) just encloses a sphere of diameter
(a) r (b) 2r (c) h (d) 2h

Answer 1

Since h > 2r where h is the height of the cylinder and r is the radius
So, when a sphere is enclosed in it, the radius of the sphere will be r.
Thus, the diameter of the sphere will be 2r.
Hence, the correct answer is option (b)