document.write( "Question 1134966: find the length and width of a rectangular sandbox, where the length is 3 feet longer than its width if you are building it with 30 feet of lumber? \n" ); document.write( "

Algebra.Com's Answer #752467 by mathsolverplus(88) $\"\"$ $\"About$

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Perimeter given: 30feet
\n" ); document.write( "l=length
\n" ); document.write( "w=width\r
\n" ); document.write( "\n" ); document.write( "l = 3 + w\r
\n" ); document.write( "\n" ); document.write( "perimeter = (length + width)2\r
\n" ); document.write( "\n" ); document.write( "30 = (3+w+w)2
\n" ); document.write( "15 = 3+2w
\n" ); document.write( "12 = 2w
\n" ); document.write( "w =6 \r
\n" ); document.write( "\n" ); document.write( "If w=6, l=9\r
\n" ); document.write( "\n" ); document.write( "Length = 9 feet
\n" ); document.write( "Width = 6 feet\r
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