Question

If the csa of hemisphere is 10 cmsquare then what is the total surface area of hemisphere

Answer 1

Heyaa!

The answer is as follows:

C.S.A of hemisphere= 2× pi× r^2

This means,

10 cm^2= 2×(22/7)×r^2

r^2=35/22

Now, T.S.A. of hemisphere= 3×pi× r^2

Keeping the valus of r^2 :-

T.S.A. = (3×(22/7)×(35/22)) cm sq.

=(3×5) cm sq.

=15 cm sq.

Hope this helps you!

:)

Answer 2

CSA of Hemisphere = 10 cm²

2 x 22/7 x r² = 10

r² = 5 x 7/ 22  = 35/22

so, r =1.261 cm

tsa of hemisphere = 3πr²

=3 x π x 1.26 x 1.26 = 14.9688 cm²

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