document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=190347>Question 190347</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a chord is 7 cent. from center of circle whose radius is 9 cent in lenght. find the length of chord in radical form and to the nearest tenth of a centimeter<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #142852 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=142852\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Garamond\" size=\"+2\">\r<BR>\n" );
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document.write( "The length of a chord given the perpendicular distance of the chord from the center of the circle, <i><b>d</b></i>, and the radius of the circle, <i><b>r</b></i>, is given by:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \  L_c\ =\ 2 \sqrt{r^2 - d^2}\">\r<BR>\n" );
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document.write( "Which is a simple application of Pythagoras' Theorem - see illustration:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28%0D%0A500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C%0D%0A%0D%0Acircle%280%2C0%2C9%29%2C%0D%0Ablue%28line%280%2C0%2C0%2C7%29%29%2C%0D%0Ablue%28line%28.02%2C0%2C.02%2C7%29%29%2C%0D%0Ablue%28line%28-.02%2C0%2C-.02%2C7%29%29%2C%0D%0Ablue%28line%280%2C0%2C5.6585%2C7%29%29%2C%0D%0Agreen%28line%28-5.6585%2C7%2C5.6585%2C7%29%29%2C%0D%0Alocate%283%2C2.5%2Cr=9%29%2C%0D%0Alocate%280.5%2C5%2Cd=7%29%2C%0D%0Alocate%282.5%2C8.5%2Chalf_chord=+sqrt%28r%5E2-d%5E2%29%29%0D%0A%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So,\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \  L_c\ =\ 2 \sqrt{9^2 - 7^2}\">\r<BR>\n" );
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document.write( "You can do your own arithmetic.\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi} + 1 = 0\"><BR>\n" );
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