The entire surface of a solid cone of base radius 3 cm.

The entire surface of a solid cone of base radius 3 cm and height 4 cm is equal to the entire surface of a solid right circular cylinder of diameter 4 cm. Find the ratio of their
(i) curved surfaces
(ii) volumes.

Solution:

Radius of the base of a cone (r) = 3 cm
Height (h) = 4 cm

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