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# Find the total surface area of a hemisphere of radius $ 10 \mathrm{~cm} $. (Use $ \pi=3.14 $ ).

The radius of a hemisphere is $10\ cm$.

To do:

We have to find the total surface area of the hemisphere.

Solution:

Radius of the hemisphere $(r)= 10\ cm$

Therefore,

The total surface area of the hemisphere $= 2\pi r^2$

$= 2 \times 3.14 \times 10 \times 10$

$= 628\ cm^2$

Hence, the total surface area of the hemisphere of radius \( 10 \mathrm{~cm} \) is $628\ cm^2$.

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