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A circle with circumference 20 has an arc with a 72º central angle.
What is the length of the arc?

Respuesta :

Answer:

l = x · c / 360

l = 72 · 20 / 360

l = 1440 / 360

l = 4

Step-by-step explanation:

1. write down the arc length formula.

2. replace x and c by their values

3. multiply and then divide to get l