Geometry and Trigonometry practice question

Answer: 6

Circumference: 2π(9) = 18π. A 120° arc is 120/360 = 1/3 of it: 6π. The multiple of π is 6.

Common wrong answers

If you answered 3

3π would be a 60° arc.

If you answered 18

18π is the FULL circumference.

If you answered 27

27π is (1/3) of the area (81π/3), not an arc length.

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