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Find the total surface area of a hemisphere and a solid hemisphere each of radius $10\ cm$.
Given:
The radii of a hemisphere and a solid hemisphere each is $10\ cm$.
To do:
We have to find the total surface area of the hemisphere and the solid hemisphere.
Solution:
Radius of the hemisphere $(r)= 10\ cm$
Therefore,
Total surface area of the hemisphere $= 2\pi r^2$
$= 2 \times 3.14 \times 10 \times 10$
$= 628\ cm^2$
Radius of the solid hemisphere $(r)= 10\ cm$
Total surface area of the solid hemisphere $(r_1)= 3\pi (r_1)^2$
$= 3 \times 3.14 \times 10 \times 10$
$= 942\ cm^2$
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