Respuesta :

Answer:

50 meters

Step-by-step explanation:

Width is x

So length will be x + 20

Perimeter = 2 (W + L) = 2 (x + x + 20) = 2 (2x + 20) = 4x + 40

so 4x + 40 = 160

4x = 120

x = 30

so length = x + 20 = 30 + 20 = 50

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