document.write( "Question 41380: Write an equation for a circle if the endpoints of a diametre are at (1,1) and (1,9).\r
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Algebra.Com's Answer #26713 by askmemath(368) $\"\"$ $\"About$

You can put this solution on YOUR website!
Given Diameter end points (a,b)and (c,d)
\n" ); document.write( "Length of radius r= $\"sqrt%28%28c-a%29%5E2+%2B+%28d-b%29%5E2%29\"$
\n" ); document.write( "Since the diameter divides the circle into 2 equal halves, its midpoint is the center of the circle
\n" ); document.write( " $\"%28a%2Bc%29%2F2\"$ $\"%28b%2Bd%29%2F2\"$ \r
\n" ); document.write( "\n" ); document.write( "And equation of the circle is $\"%28%28X-%28a%2Bc%29%2F2%29%5E2+%2B+%28Y-%28b%2Bd%29%2F2%29%5E2%29=+r%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( "Just substitute and solve \n" ); document.write( "

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