document.write( "Question 404480: 10. A square has a 40-cm diagonal. How long is each side of the square? Round your answer to the nearest tenth of a centimeter. (1 point \n" ); document.write( "
Algebra.Com's Answer #285844 by mananth(16946)\"\" \"About 
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The legs and the diagonal form a right angle.
\n" ); document.write( "The diagonal is the hypotenuse.
\n" ); document.write( "apply Pythagoras theorem
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\n" ); document.write( "Let l be one leg.
\n" ); document.write( "since it is a square the other leg is also l.\r
\n" ); document.write( "\n" ); document.write( "l^2+l^2= 40^2
\n" ); document.write( "2l^2=1600
\n" ); document.write( "l^2=800
\n" ); document.write( "l = sqrt (800)
\n" ); document.write( "l = 28.28
\n" ); document.write( "...
\n" ); document.write( "l= 28.3 cm
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