2024 · Q90
What is the radius of the circle with centre at O₂?
Elementary MathematicsCircles
- A5 − √10
- B1 + 2√5
- C(22 − 4√10)/9
- D(22 − 2√10)/9
Explanation
Evaluating the radical expression from the figure’s measurements yields (22 − 4√10)/9. The surd cannot simplify further. This value matches option (c).