document.write( "Question 333037: The number of centimeters in the perimeter of semicircle is numerically the
\n" ); document.write( "same as the number of square centimeters in its area. What is the number of
\n" ); document.write( "centimeters in the radius of the semicircle?
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Algebra.Com's Answer #238644 by jrfrunner(365)\"\" \"About 
You can put this solution on YOUR website!
Let P =the perimeter of semicircle
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\n" ); document.write( "P = Circumference/2 + Diameter
\n" ); document.write( "\"P+=+%282%2Api%2Ar%29%2F2+%2B+2%2Ar\"
\n" ); document.write( "\"P+=+pi%2Ar+%2B2%2Ar\"
\n" ); document.write( "\"P+=+r%2A%28pi+%2B2%29\"
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\n" ); document.write( "You are given: perimeter of semicircle = area of semicircle
\n" ); document.write( "\"perimeter+of+semicircle+=r%2A%28pi+%2B2%29++=+Area+of+semicircle=+%28pi%2Ar%5E2%29%2F2+\"
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\n" ); document.write( "\"r%2A%28pi+%2B2%29++=+%28pi%2Ar%5E2%29%2F2+\"
\n" ); document.write( "\"2%2Ar%2A%28pi%2B2%29=pi%2Ar%5E2\" (multiply both sides by 2)
\n" ); document.write( "\"2%2A%28pi%2B2%29=pi%2Ar\" (divide both sides by r)
\n" ); document.write( "\"2%2A%28pi%2B2%29%2Fpi=r\" (divide both sides by \"pi\")
\n" ); document.write( "\"2%2A%28pi%2B2%29%2Fpi=2%2A%28pi%2Fpi%29%2B4%2Fpi=2%2B4%2Fpi=r\"
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