document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=288509>Question 288509</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I can't seem to figure out this problem. Please Help Me!! I have tried a million times and it just doesnt seem right. The actual problem is: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Find++the++area++of++an++equilateral++triangle++with++a++side++length++of++15cm. ALIGN=MIDDLE  ALT=\"Find++the++area++of++an++equilateral++triangle++with++a++side++length++of++15cm.\"   DISABLED_style= \"max-width:90%; height:auto;\" > First I tried plugging it into this formula: A=15squared(times the square root of 3 divided by 4) but I got this really weird number; something around 97. Can you help me?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #209125 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=209125\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find  the  area  of  an  equilateral <BR>\n" );
document.write( "triangle  with  a  side  length  of  15 cm.<BR>\n" );
document.write( "-----------------------------------<BR>\n" );
document.write( "Draw the equilateral triangle.<BR>\n" );
document.write( "Draw an altitude from the top vertex <BR>\n" );
document.write( "perpendicular to the base.<BR>\n" );
document.write( "------------------------------<BR>\n" );
document.write( "Use Pythagoras to find the length of the altitude.<BR>\n" );
document.write( "15^2 = 7.5^2 + a^2<BR>\n" );
document.write( "a^2 = 15^2-7.5^2<BR>\n" );
document.write( "a^2 = 168.75<BR>\n" );
document.write( "altitude = 12.99 cm<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "Area = (1/2)base*height<BR>\n" );
document.write( "A = (1/2)15*12.99<BR>\n" );
document.write( "A = 97.42 sq. cm.<BR>\n" );
document.write( "=================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );