document.write( "Question 711113: each side of an equilateral triangle is 8cm long. its area is \n" ); document.write( "
Algebra.Com's Answer #437285 by tutor_paul(519)\"\" \"About 
You can put this solution on YOUR website!
Area of a triangle formula is:
\n" ); document.write( "\"A=%281%2F2%29bh\" where:
\n" ); document.write( "b=base
\n" ); document.write( "h=length of perpendicular line from vertex to the base.
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\n" ); document.write( "You are given b=8, so you just need h.
\n" ); document.write( "Since the triangle is equilateral, all angles are 60 degrees.
\n" ); document.write( "Since the triangle is equilateral, all sides are 8 cm.
\n" ); document.write( "You can find h as follows:
\n" ); document.write( "\"sin%2860%29=h%2F8\"
\n" ); document.write( "\"%28sqrt%283%29%29%2F2=h%2F8\"
\n" ); document.write( "\"h=%288sqrt%283%29%29%29%2F2\"
\n" ); document.write( "\"h=4sqrt%283%29\"
\n" ); document.write( "Now that you know h, just plug it into the Area equation above to get your answer. I will leave that part to you.
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\n" ); document.write( "Good Luck,
\n" ); document.write( "tutor_paul@yahoo.com
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