document.write( "Question 474601: What is an equation of the circle with center (0,3) and a diameter 6? \n" ); document.write( "
Algebra.Com's Answer #325490 by Tatiana_Stebko(1539)\"\" \"About 
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an equation of the circle with center (a,b) and radius r
\n" ); document.write( "\"%28x-a%29%5E2%2B%28y-b%29%5E2=r%5E2\"
\n" ); document.write( "a diameter of a circle is 6, the the radius \"r=d%2F2=6%2F2=3\"
\n" ); document.write( "an equation of the circle with center (0,3) and radius 3
\n" ); document.write( "\"%28x-0%29%5E2%2B%28y-3%29%5E2=3%5E2\"
\n" ); document.write( "\"x%5E2%2B%28y-3%29%5E2=9\"
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