Respuesta :

Answer:

Step-by-step explanation:

Perimeter = 2(l + w)

l = 8.5cm, perimeter = 24cm

24 = 2(8.5 + w)

Dividing through by 2

24/2 = 8.5 + w

12 = 8.5 + w

W = 12 - 8.5

W = 3.5cm

Answer:

look at the shown picture

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