document.write( "Question 554914: the area of a square is 81 square centimeters, find the length of the diagonal. \n" ); document.write( "
Algebra.Com's Answer #361578 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "the area of a square is 81 square centimeters, find the length of the diagonal.\r
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\n" ); document.write( "\n" ); document.write( "The diagonal of the square will form two 45-45 right triangles\r
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\n" ); document.write( "\n" ); document.write( "In any 45-45 right triangle (isosceles right triangle), the hypotenuse equals one side, times square root of 2 (radical 2). Since one side = 9, then the length of the hypotenuse or the length of the diagonal can be written as:\r
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\n" ); document.write( "\n" ); document.write( "\"highlight_green%289sqrt%282%29%29\" \r
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