2009 · Q42
If a sphere of radius 10 cm is intersected by a plane at a distance 8 cm from its centre, what is the radius of the curve of intersection of the plane of the plane and the sphere?
Elementary MathematicsMensuration
- A8 cm
- B6 cm
- C5 cm
- D4 cm
Explanation
√(10² − 8²) = 6 cm.