Respuesta :

Answer:

3 1/2ft

Step-by-step explanation:

width of the shelf = 1 1/8 = 9/8

length of the shelf = 3 1/9 of the width = 28/8 of the width

length of the shelf = 28/9 x 9/8 = 28/8 = 7/2 = 3 1/2ft

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