document.write( "Question 199376: Analytic Geometry
\n" ); document.write( "20.Find the diameter and the area of the circle defined by x^2+y^2=64\r
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Algebra.Com's Answer #150212 by Mathtut(3670)\"\" \"About 
You can put this solution on YOUR website!
\"x%5E2%2By%5E2=64\"
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\n" ); document.write( "\"r%5E2=64\"
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\n" ); document.write( "r=8 ...so diameter = 16\r
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\n" ); document.write( "area =\"%28pi%298%5E2\"
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\n" ); document.write( "area=\"64%28pi%29\"
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