4
Answer: BSet 1: Circles (Advanced)
Explanation
PROBLEM
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)
A.
6pi
B.✓ Correct
3pi
C.
6pi
D.
9pi
Detailed Explanation
Choice B is the best answer. Sector area = (120/360) times pi times 3 squared = 3pi
Why others are wrong:
A: 6pi is incorrect because it does not satisfy the equation.
C: 6pi is incorrect because it does not satisfy the equation.
D: 9pi is incorrect because it does not satisfy the equation.