2024 · Q81
What is the length of MN ?
Elementary MathematicsGeometry: Lines, Angles and Triangles
- A3/8 cm
- B5/8 cm
- C9/8 cm
- D15/8 cm
Explanation
The intersecting-chords relation in the figure gives 1/MN = 1/3 + 1/5 = 8/15. Inverting yields MN = 15/8. Hence the answer is option (d).