Respuesta :

Answer:

Width = 9.5

Step-by-step explanation:

Step 1:

Length + Length + Width + Width = Perimeter

Step 2:

12.4 + 12.4 + w + w = 43.8

Step 3:

24.8 + 2w = 43.8

Step 4:

2w = 19

Answer:

Width = 9.5

Hope This Helps :)