document.write( "Question 1011926: An equilateral triangle has 27 cm. What is its area? Thank you. \n" ); document.write( "
Algebra.Com's Answer #627750 by josgarithmetic(39617)\"\" \"About 
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Each side is \"27%2F3=9\" cm.\r
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\n" ); document.write( "\n" ); document.write( "An altitude separates two congruent special right triangles. The altitude serves as height and the hypotenuse is also 9 cm. The short leg will be half the hypotenuse, or \"9%2F2\".\r
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\n" ); document.write( "\n" ); document.write( "You want an area \"2%281%2F2%29%289%2F2%29%2Ay\", using y as the altitude. The factor 2 is used on the far left because TWO of the special 30-60-90 right triangles make your given one equilateral triangle.\r
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\n" ); document.write( "\n" ); document.write( "find y using pythagorean theorem formula.
\n" ); document.write( "\"y%5E2%2B%289%2F2%29%5E2=9%5E2\"
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