document.write( "Question 468795: write the standard form of the equation of the circle with the radius sqrt30 and whose center is the origin \n" ); document.write( "

Algebra.Com's Answer #321667 by Theo(13342) $\"\"$ $\"About$

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the formula for a circle is:
\n" ); document.write( "(x-h)^2 + (y-k)^2 = r^2
\n" ); document.write( "you have r = sqrt(30) so r^2 = 30
\n" ); document.write( "(h,k) is the center of the circle.
\n" ); document.write( "since this is the origin, the center of the circle is at (0,0).
\n" ); document.write( "this makes h = 0 and k = 0.
\n" ); document.write( "your formula becomes:
\n" ); document.write( "x^2 + y^2 = 30\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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