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1 answer:

3 0

First you need to find the Circumference
C = 2 pi r = 2 * 3.14 * 5.5 = 34.54

Arc measure / 360 = 7.7 / 34.54
Arc measure = 7.7 * 360 / 34.54
Arc measure = 80.25

Answer:
80.25 if you are using pi = 3.14
80.2 if you are using pi = 3.141592....

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