document.write( "Question 200402: Analytic Geometry
\n" ); document.write( "20. Find the diameter and the area of the cirlce defined by x^2+y^2=64.
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Algebra.Com's Answer #150696 by solver91311(24713)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "The equation for a circle centered at with radius is:\r
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\n" ); document.write( "\n" ); document.write( "So your circle has a center at (0,0) and a radius of the square root of 64.\r
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\n" ); document.write( "\n" ); document.write( "The diameter of a circle is twice the radius, and the area is times the radius squared.\r
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