Respuesta :

Answer:

≈ 6.28 inches

Step-by-step explanation:

The length of the arc is

arc = circumference × fraction of circle

     = 2πr × [tex]\frac{90}{360}[/tex]

     = 2π × 4 × [tex]\frac{1}{4}[/tex] = 2π ≈ 6.28 inches


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