SAT Math Multiple Choice Question 51: Answer and Explanation
In the figure above, circle O has a radius of 8, and angle XOY measures π radians. What is the measure of minor arc XY ?
- A. π
- B. π
- C. 5π
- D. 16π
Correct Answer: B
B Because the question wants arc length and gives you the measure of the central angle in radians, you can use the formula s = rθ to find the arc length: s = (8) = π, which reduces to π, which is (B).