Respuesta :

reinhard10158

Step-by-step explanation:

l = length

w = width

perimeter = 2×l + 2×w = 56

w = l - 4

2×l + 2×(l-4) = 56

2×l + 2×l - 8 = 56

4×l = 64

l = 16 meters

w = l - 4 = 16 - 4 = 12 meters

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