document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=620504>Question 620504</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How long is each side of an octagon that is 16 ft. across? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #390255 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=390255\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How long is each side of an octagon that is 16 ft. across?<BR>\n" );
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document.write( "If it's 16 ft across the flats:<BR>\n" );
document.write( "The central angles are 360/8 = 45 degs<BR>\n" );
document.write( "The apothem = 16/2 = 8 ft<BR>\n" );
document.write( "tan(45/2) = (s/2)/8<BR>\n" );
document.write( "s = 2*8*tan(22.5)<BR>\n" );
document.write( "s =~ 6.627 feet<BR>\n" );
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