Answer:
Width = Length + 11
Perimeter:
(2 × Width) + (2 × Length) = 54 Feet
Substitute Width = Length + 11,
(2)(Length + 11) + (2 × Length) = 54
Length + 11 + Length = 54 ÷ 2
2Length + 11 = 27
2Legth = 27 - 11 = 16
Length = 16 ÷ 2 = 8
Width = 8 + 11 = 19