document.write( "Question 945544: The perimeter of a rectangular concrete slab is 90 feet and its area is 416 square feet. What is the length of the longer side of the slab? \n" ); document.write( "
Algebra.Com's Answer #576727 by Alan3354(69443)\"\" \"About 
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The perimeter of a rectangular concrete slab is 90 feet and its area is 416 square feet. What is the length of the longer side of the slab?
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\n" ); document.write( "2L + 2W = 90
\n" ); document.write( "L + W = 45
\n" ); document.write( "L*W = 416
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\n" ); document.write( "Find a pair of factors of 416 with a sum of 45.
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