MATHEMATICS · Single correct · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes
Problem
The height of a cone is 60 cm. A small cone is cut off at the top by a plane parallel to the base and its volume is 641th the volume of original cone. The height from the base at which the section is made is
(A) 15 cm
(B) 30 cm
(C) 45 cm
(D) 20 cm