Question

if two solid hemispheres if same base radius r are joined together along their bases ,then curved surface area of this new solid is
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Answer 1

AnswEr:-

Given that,

Two solid hemispheres if same base radius r are joined together along their bases .

Then,

The curved surface area of new solid = 2 πr2 + 2 πr2 = 4πr2.

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Answer 2

Because :

curved surface area of a hemisphere is 2 w2 and here, we join two solid hemispheres along their bases of radius r, from which we get a solid sphere.

Hence, the curved surface area of new solid = 2 πr2 + 2 πr2 = 4πr2.

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