Hi,



length of a rectangle is 1 foot more than twice the width

Let x and (2x+1)represent the width and length respectively

 P = 2x + 2(2x+1) = 20ft

          6x = 18ft

           x = 3ft, the width.  the length is 7ft    (2*3+1)



CHECKING our Answer***

2*3ft + 2*7ft = 20ft 

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