What is the central angle (in radians) of a sector with arc length 12 cm in a circle of radius 4 cm?

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Accepted Answer

1. Use the arc length formula: $s = r	heta$.
2. Substitute values: $12 = 4	heta$, so $	heta = 12/4 = 3$.
3. The central angle is 3 radians. So the correct choice is **(b)**.

FINAL_ANSWER: b

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