a rectangular garden is fenced on all sides with 256 feet of fencing. The garden is 8 feet longer than it is wide. Find the length and width of the garden.
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perimeter of rectangle=2(l+b)
=256=2{(8+b)+b}
=256=2{8+2b}
=256=16+4b
=256-16=4b
=240=4b
=240/4=b
=60=breadth
=8+60=68=length
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