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)\"\" \"About 
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The height of an equilateral triangle is a perpendicular bisector, therefore
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\n" ); document.write( "(x/2)^2 + 12^2 = x^2
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\n" ); document.write( "x^2 - (x^2/4) = 144
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\n" ); document.write( "3x^2/4 = 144
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\n" ); document.write( "3x^2 = 576
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\n" ); document.write( "x^2 = 192
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\n" ); document.write( "x = 13.8564 cm
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