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| Math Central | Quandaries & Queries |
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Question from sagir, a student: how to find the area of semi circle? |
Sagir,
You need to know the area of a circle. The expression is
area = π r2 where r is the radius of the circle and π is approximately 3.1416.
A semicircle is half a circle so the area of a semicircle of radius r is half the area of a circle of radius r.
Penny
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