document.write( "Question 198042: how would I find the area of a square with a diagonal of 10 square root of 2? \n" ); document.write( "
Algebra.Com's Answer #148556 by edjones(8007)\"\" \"About 
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The diagonal is the hypotenuse of an equilateral right triangle
\n" ); document.write( "Let a be one of the sides.
\n" ); document.write( "2a^2=c^2
\n" ); document.write( "2a^2=(10sqrt(2))^2
\n" ); document.write( "2a^2=200
\n" ); document.write( "a^2=100
\n" ); document.write( "a=10
\n" ); document.write( ".
\n" ); document.write( "Area of the square=a^2=100 sq units
\n" ); document.write( ".
\n" ); document.write( "Ed
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