document.write( "Question 837797: Write the equation of a circle with center at (0, 0) and a diameter of 20 \n" ); document.write( "
Algebra.Com's Answer #504751 by richard1234(7193)\"\" \"About 
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Radius = 10\r
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\n" ); document.write( "\n" ); document.write( "Eq. of circle: x^2 + y^2 = 10^2
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