Respuesta :

sqdancefan

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Answer:

  6π ≈ 18.8 miles

Step-by-step explanation:

The full circumference of a 12-mile circle is ...

  C = πd

  C = π(12 mi)

So, half the circumference of the circle is ...

  arc length = 1/2C = (12π mi)/2 = 6π mi ≈ 18.8 mi