document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=551080>Question 551080</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how i do this?\r<BR>\n" );
document.write( "\n" );
document.write( "find the equation of a circle centered at the origin, and having radius 1\r<BR>\n" );
document.write( "\n" );
document.write( "find the equation of a circle centered at the origin and having radius 5\r<BR>\n" );
document.write( "\n" );
document.write( "find the equation of a circle centered at the origin, and having radius ,/19\r<BR>\n" );
document.write( "\n" );
document.write( "find the equation of a circle centered at the origin and having radius 3,/7\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #359359 by </B><A HREF=/tutors/aboutme.mpl?userid=AnlytcPhil><B>AnlytcPhil(1807)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=AnlytcPhil><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=AnlytcPhil><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=359359\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "Substitute the value of the radius for r in\r\n" );
document.write( "\r\n" );
document.write( "x² + y² = r²\r\n" );
document.write( "\r\n" );
document.write( "For instance, to get the answer to \r\n" );
document.write( "</PRE><BR>\n" );
document.write( "find the equation of a circle centered at the origin and having radius 5<BR>\n" );
document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "just substitute 5 for r and get\r\n" );
document.write( "\r\n" );
document.write( "x² + y² = 5²\r\n" );
document.write( "\r\n" );
document.write( "and then do one more step, change 5² to 25\r\n" );
document.write( "\r\n" );
document.write( "x² + y² = 25\r\n" );
document.write( "\r\n" );
document.write( "That's the equation.\r\n" );
document.write( "\r\n" );
document.write( "That's all there is to it!\r\n" );
document.write( "\r\n" );
document.write( "Edwin</PRE> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );