A right circular cylinder of radius

Question:

A right circular cylinder of radius r cm and height h cm (where, h>2r) just encloses a sphere of diameter

(a) r cm                        

(b) 2r cm            

(c) h cm                  

(d) 2h cm

Solution:

(b) Because the sphere encloses in the cylinder, therefore the diameter of sphere is equal to diameter of cylinder which is 2r cm.

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