document.write( "Question 1132721: An equilateral triangle has a side length of 4 ft. What is the area of the triangle? \n" ); document.write( "
Algebra.Com's Answer #749817 by Boreal(15235)\"\" \"About 
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Draw this and the altitude is a perpendicular bisector of the base.
\n" ); document.write( "that right triangle has base 2, alt h and an angle of 60 degrees
\n" ); document.write( "sin 60=alt/4
\n" ); document.write( "sqrt(3)/2=alt/4
\n" ); document.write( "altitude is 2 sqrt(3) feet
\n" ); document.write( "area is 1/2 bh=1/2*2sqrt(3)*4=4 sqrt(3) feet
\n" ); document.write( "the general formula is s^2/4* sqrt(3)
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