SOLUTION: if a wire is bent into the shape of a square ,then the area enclosed by the squre is 81 cm.sq when the wire is bent into a semi -cercular shape the area enclosed by the semi circle

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Question 847522: if a wire is bent into the shape of a square ,then the area enclosed by the squre is 81 cm.sq when the wire is bent into a semi -cercular shape the area enclosed by the semi circle will be
Answer by Alan3354(69443) About Me  (Show Source):
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if a wire is bent into the shape of a square ,then the area enclosed by the squre is 81 cm.sq when the wire is bent into a semi -cercular shape the area enclosed by the semi circle will be
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Step 1:
Find the length of the wire
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Step 2:
Find the circumference + diameter made by that length
Use s for wire length
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For radius r:
s+=+pi%2Ar+%2B+2r+=+r%2A%28pi+%2B+2%29
r+=+s%2F%28pi%2B2%29
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Area+=+pi%2Ar%5E2%2F2