What is the total surface area …
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Posted by Neshok Ls 3 years, 9 months ago
- 1 answers
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Gaurav Seth 3 years, 9 months ago
The surface area of a sphere of radius r is 4πr 2
. Half of this is 2πr 2
.
If you have a hemispherical object then it has a base which is a circle of radius r.
The area of a circle of radius r is πr 2
and thus if the hemisphere is meant to include the base then the surface area is 2πr 2 +πr 2
=3πr 2
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