document.write( "Question 1194716: If the radius of the circle x^2+y^2-6x+4y+k=0 find the equation of the circle with center (3,7) and the circumference 8pie \n" ); document.write( "
Algebra.Com's Answer #826965 by josgarithmetic(39618)\"\" \"About 
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What radius?
\n" ); document.write( "Some part or parts of your description are missing or wrong.\r
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\n" ); document.write( "\n" ); document.write( "The equation for the GIVEN circle, after completing-the-squares is \"%28x-3%29%5E2%2B%28y%2B2%29%5E2=13-k\", so the radius for the given circle is \"sqrt%2813-k%29\".\r
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\n" ); document.write( "\n" ); document.write( "If you want the a circle with center (3,7) and circumference 8pi, then
\n" ); document.write( "\"%28x-3%29%5E2%2B%28y-7%29%5E2=r%5E2\" and you would find this \"r\" according to
\n" ); document.write( "\"2pi%2Ar=8pi\"
\n" ); document.write( "\"2r=8\"
\n" ); document.write( "\"r=4\"
\n" ); document.write( "and the equation then is \"%28x-3%29%5E2%2B%28y-7%29%5E2=4%5E2\". This IS NOT RELEVANT to your given equation.
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