If a sphere is made by melting a solid right circular cylinder of radus 2x cm and height x cm , then the radius of the sphere will be
A. ` root 3 (3x) ` cm
B. ` root 3 (3x) ` cm
C. x cm
D. 2x cm
A. ` root 3 (3x) ` cm
B. ` root 3 (3x) ` cm
C. x cm
D. 2x cm
Correct Answer – B