Question

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The surface area of a solid sphere is 1256 cm2. It is cut into two hemispheres. Find the total surface area and volume of a hemisphere.
Take π = 3.14


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Answer 1

first we have to find out the radius of the sphere

1256=4×3.14×r²

1256=12.56×r²

1256/12.56=r²

100=r²

10=r

total surface area of hemisphere is 3πr²

=3×3.14×10²

=9.42×100

=942cm²

now volume of the hemisphere is

=⅔×π×r³

=⅔×3.14×10³

=2.093×1000

=2093.3333cm³

this is not from Google

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thnq

Answer 2

Answer:

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