document.write( "Question 310641: find the radius r and the center (h,k) of the following circle\r
\n" ); document.write( "\n" ); document.write( "3(x-3)^2 + 3y^2 = 75 \n" ); document.write( "

Algebra.Com's Answer #222139 by nerdybill(7384) $\"\"$ $\"About$

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find the radius r and the center (h,k) of the following circle
\n" ); document.write( "3(x-3)^2 + 3y^2 = 75
\n" ); document.write( ".
\n" ); document.write( "Circle equation:
\n" ); document.write( " $\"+%28x-h%29%5E2+%2B+%28y-k%29%5E2+=+r%5E2+\"$
\n" ); document.write( "where
\n" ); document.write( "(h,k) is the center
\n" ); document.write( "r is the radius
\n" ); document.write( ".
\n" ); document.write( "Starting with what was given:
\n" ); document.write( " $\"+3%28x-3%29%5E2+%2B+3y%5E2+=+75+\"$
\n" ); document.write( "Dividing both sides by 3:
\n" ); document.write( " $\"+%28x-3%29%5E2+%2B+y%5E2+=+75%2F3+\"$
\n" ); document.write( " $\"+%28x-3%29%5E2+%2B+%28y-0%29%5E2+=+25+\"$
\n" ); document.write( " $\"+%28x-3%29%5E2+%2B+%28y-0%29%5E2+=+5%5E2+\"$
\n" ); document.write( ".
\n" ); document.write( "center is at (3,0)
\n" ); document.write( "radius is 5
\n" ); document.write( " \n" ); document.write( "

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