A chord 16 cm long is drawn in a circle of radius 10 cm. The distance of the chord from the centre is
- 4 cm
- 8 cm
- 6 cm
- 12 cm
Show answer and solution
Correct answer: C. 6 cm
1. Half-chord = 8; right triangle with hypotenuse = radius 10.
2. d squared = 10 squared - 8 squared = 100 - 64 = 36.
3. d = 6 cm.
_Source: syllabus Mathematics, Ch 11 "Areas Related to Circles", §11.2_