document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=318805>Question 318805</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An equilateral triangle (one with all sides the same length) has an altitude of 40 inches. Find the length of the sides.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #228206 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=228206\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "One way to solve this is using the Pythagorean theorem. We set up one side as x and the other side as 1/2(x) so we have:<BR>\n" );
document.write( "1/2x^2+40^2=x^2<BR>\n" );
document.write( "Subtract 1/2x^2 from both sides to get:<BR>\n" );
document.write( "1600=1/2x^2<BR>\n" );
document.write( "Multiple by 2 to get:<BR>\n" );
document.write( "3200=x^2 <BR>\n" );
document.write( "Sq root each side to get:<BR>\n" );
document.write( "x=56.57 inches (rounded off) for each side.<BR>\n" );
document.write( "Make ssense?<BR>\n" );
document.write( "RJ <BR>\n" );
document.write( "www.math-unlock.com <BR>\n" );
document.write( "  </SPAN>\n" );
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