document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1025783>Question 1025783</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How wide should a parabolic satellite dish be at its opening if the receiver (focus) is  placed 6 feet away from the vertex and it is 12 feet deep at its center? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #641101 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=641101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Imagine parabola with vertex at the origin on a coordinate system, and focus is (0,6).  The directrix is the line (x,-6).  You can derive the equation of the parabola according to the definition of a parabola and using the Distance Formula.\r<BR>\n" );
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document.write( "See and study this video for help on this: <a  rel=nofollow HREF=\"https://www.youtube.com/watch?v=M8LGsQMwwj4\">Derive equation for a parabola given focus and directrix, for vertex at Origin</a> </SPAN>\n" );
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