Set 3: Circles (Advanced)

**Choice C is the best answer.** Sector area = (120/360) times pi times 4 squared = 5.333333333333333pi

Explanation

Answer: C

PROBLEM

A circle has radius 4. What is the area of a 120-degree sector? (Express as a number times pi)

10.666666666666666pi

8pi

5.333333333333333pi

✓ Correct

16pi

Detailed Explanation

Choice C is the best answer. Sector area = (120/360) times pi times 4 squared = 5.333333333333333pi

Why others are wrong:

A: 10.666666666666666pi is incorrect because it does not satisfy the equation.

B: 8pi is incorrect because it does not satisfy the equation.

D: 16pi is incorrect because it does not satisfy the equation.