A hemisphere and a cone have equal bases. If their heights are also equal, then

Question

A hemisphere and a cone have equal bases. If their heights are also equal, then the ratio of their curved surface will be :

Options:

A . $$\sqrt 2 :1$$

B . $$1:\sqrt 2 $$

C . 2 : 1

D . 1 : 2

Answer: Option A

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