The radius of the base and height of a metallic solid cylinder are `r` cm and 6 cm respectively. It is melted and recast into a solid cone of the same radius of base. The height of the cone is (a) 9 cm (b) 18 cm (c) 27 cm (d) 54 cm

Options

A. 54 cm
B. 27 cm
C. 18 cm
D. 9 cm

Answer

C