document.write( "Question 826800: How do you find the area of an equilateral triangle if the perimeter is 18cm? \n" ); document.write( "
Algebra.Com's Answer #498263 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! each side is 6 \n" ); document.write( "drop a line from the top angle to the base forming a right triangle with base 3 and hypotenuse 6 \n" ); document.write( "and the height is 3 sqrt(3)\r \n" ); document.write( "\n" ); document.write( "3^2+h^2=36 \n" ); document.write( "h^2=27 \n" ); document.write( "h^2=3*9 \n" ); document.write( "h=3sqrt(3) \n" ); document.write( "1/2 b*h=1/2*3*3*sqrt(3) \n" ); document.write( "9/2 sqrt(3)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |