document.write( "Question 1047776: find the perimeter of the rectangle whose length is 40cm and a diagonal is 41cm? \n" ); document.write( "
Algebra.Com's Answer #663360 by ikleyn(52788)\"\" \"About 
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\n" ); document.write( "The width of this rectangle is \"sqrt%2841%5E2+-+40%5E2%29\" = \"sqrt%2881%29\" = 9.\r
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\n" ); document.write( "\n" ); document.write( "Now you know the length (40) and the width (9) and easily can find the perimeter.\r
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