Set 3: Circles (Advanced)

[Variation 1] **Choice B is the best answer.** Sector area = (120/360) times pi times 3 squared = 3pi

Explanation

Answer: B

PROBLEM

Recent studies show that a circle has radius 3. What is the area of a 120-degree sector? (Express as a number times pi)

A circle has radius 3. What is the area of a 120-degree sector? (Express as a number times pi)

9pi

3pi

✓ Correct

6pi

Detailed Explanation

[Variation 1] Choice B is the best answer. Sector area = (120/360) times pi times 3 squared = 3pi

Why others are wrong:

A: 9pi is incorrect because it does not satisfy the equation.

C: 6pi is incorrect because it does not satisfy the equation.

D: 6pi is incorrect because it does not satisfy the equation.