document.write( "Question 384308: A yard has an area of 54 square inches and a perimeter of 42 inches. Find the length and width of the yard. \n" ); document.write( "
Algebra.Com's Answer #272084 by richard1234(7193)\"\" \"About 
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We have\r
\n" ); document.write( "\n" ); document.write( "xy = 54, and\r
\n" ); document.write( "\n" ); document.write( "2(x + y) = 42 --> x + y = 21\r
\n" ); document.write( "\n" ); document.write( "This is a fairly easy case, as guess and check shows the dimensions to be 18 in. and 3 in. However if the values didn't reveal an obvious answer, you could solve it by defining a quadratic polynomial using Vieta's formulas (relating to the sum and product of roots).
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