1.

Height of a cone is 12 cm and radius of its base is 3 cm. The cone is cut into two parts by a plane parallel to its base such that height of both the parts is same. What is the ratio of volume of upper part and lower part respectively?

A. 1 : 3
B. 1 : 7
C. 1 : 8
D. 1 : 4
Answer» C. 1 : 8


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