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To do this question, we have to ask ourself, what formula do you use to find the surface area of a sphere.

The answer should be known to you, but it is 4πr2.

Since we know how to find the surface area for a full sphere, then finding the surface for a half sphere is just half the job.

You use the formula for the full sphere 4πr2, and divide it by 2... so (4πr2) / 2 .

Voila!

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Q: How do you figure out surface area for half sphere?
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