document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=865319>Question 865319</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the area of an equilateral triangle (regular 3-gon) with the given measurement.\r<BR>\n" );
document.write( "\n" );
document.write( "9-inch perimeter\r<BR>\n" );
document.write( "\n" );
document.write( "A = sq. in. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #521611 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=521611\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the area of an equilateral triangle (regular 3-gon) with the given measurement.\r<BR>\n" );
document.write( "\n" );
document.write( "9-inch perimeter --> sides = 9/3 = 3<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Area of a regular polygon with n sides of length s is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Area+=+ns%5E2%2Acot%28180%2Fn%29%2F4 ALIGN=MIDDLE  ALT=\"Area+=+ns%5E2%2Acot%28180%2Fn%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Area+=+3%2A3%5E2%2Acot%2860%29%2F4 ALIGN=MIDDLE  ALT=\"Area+=+3%2A3%5E2%2Acot%2860%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Area+=+%2827%2F4%29%2Asqrt%283%29%2F3 ALIGN=MIDDLE  ALT=\"Area+=+%2827%2F4%29%2Asqrt%283%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=~ 1.299 sq inches </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );