"A hemisphere and a cone have equal bases. If their heights are also equal, then the rat
Channel: Doubtnut
Date: 2020-04-05

"A hemisphere
 and a cone have equal bases. If their heights are also equal, then the ratio
 of their curved surfaces will be
(a) 1 : 2 (b) 2 : 1 (c) `1\ :sqrt(2)`
(d) `sqrt(2)\ :1`"