document.write( "Question 260303: Okay. So how do you find the area of a semi-circle if you already have the perimeter? I am solving a problem where the perimeter is 20 and it wants me to find the area of the semi circle. plz help me out!
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Algebra.Com's Answer #191726 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Find the radius.
\n" ); document.write( "The perimeter of a semi-circle = pi*r.
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\n" ); document.write( "Then, the area is (1/2)pi*r^2
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