document.write( "Question 1063973: Three sides of equal length, Xcm, are joined to form an equilateral triangle. If the height of the triangle is 12cm, find the value of x \n" ); document.write( "
Algebra.Com's Answer #679027 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! The height of an equilateral triangle is a perpendicular bisector, therefore \n" ); document.write( ": \n" ); document.write( "(x/2)^2 + 12^2 = x^2 \n" ); document.write( ": \n" ); document.write( "x^2 - (x^2/4) = 144 \n" ); document.write( ": \n" ); document.write( "3x^2/4 = 144 \n" ); document.write( ": \n" ); document.write( "3x^2 = 576 \n" ); document.write( ": \n" ); document.write( "x^2 = 192 \n" ); document.write( ": \n" ); document.write( "x = 13.8564 cm \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( " |