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Answers

1. 78.5398163397 cm^2
2. 201.06192983 cm^2
3. 38.4845100065 ft^2
4. 176.714586764 m^2
5. 1963.49540849 in^2

Explanation:

The formula for the area of a semicircle is πr^2/2 where r is the radius.

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