2020 · Q36
In a pi-diagram there are three sectors. If the ratio of the angles of the sectors is 1 : 2 : 3, then what is the angle of the largest sector?
Elementary MathematicsStatistics
- A200°
- B180°
- C150°
- D120°
Explanation
The sectors are in ratio 1 : 2 : 3, so the largest occupies 3/6 = 1/2 of the circle. Its angle is ½ × 360° = 180°. A sector occupying half the circle subtends 180° at the centre.