Answer:
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Given:
- Arc length (s) = 8π/3
- Radius (r) = 4 km
To find the arc measure (θ) in radians, we can use the formula:
Now, plug in the given values:
To solve for θ, divide both sides by 4:
Simplify the expression:
So, the arc measure (θ) is 2π/3 radians