document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=553687>Question 553687</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation of the circle of radius 8 with its center at the origin. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #360979 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=360979\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> formula for circle is (x-h)^2 + (y-k)^ = r^2<BR>\n" );
document.write( "center is at the origin so (h,k) = (0,0)<BR>\n" );
document.write( "r^2 = 8^2 = 64<BR>\n" );
document.write( "equation is x^2 + y^2 = 64<BR>\n" );
document.write( "to graph the circle, solve for y.<BR>\n" );
document.write( "subtract x^2 from both sides of the equation to get:<BR>\n" );
document.write( "y^2 = 64 - x^2<BR>\n" );
document.write( "take the square root of both sides of the equation to get:<BR>\n" );
document.write( "y = +/- sqrt(64-x^2)<BR>\n" );
document.write( "graph looks like this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28600%2C600%2C-10%2C10%2C-10%2C10%2Csqrt%2864-x%5E2%29%2C-sqrt%2864-x%5E2%29%29 ALIGN=MIDDLE  ALT=\"graph%28600%2C600%2C-10%2C10%2C-10%2C10%2Csqrt%2864-x%5E2%29%2C-sqrt%2864-x%5E2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );