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A cone , a hemisphere and a cylinder s...

A cone , a hemisphere and a cylinder stand on equal bases of radius R and have equal heights H . Their whole surfaces are in the ratio :

A

`(sqrt3 +1):3:4`

B

`(sqrt2 +1):7:8`

C

`(sqrt2 +1):3:4`

D

none of these

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The correct Answer is:
C
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