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Two solid hemispheres of same base radiu...

Two solid hemispheres of same base radius 'r' are joined together along their bases. The curved surface area of the new solid is

A

`4pir^(2)`

B

`3pir^(2)`

C

`6pir^(2)`

D

`4/(3)pir^(2)`.

Text Solution

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The correct Answer is:
A
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