CDS 2025 · PYQ · Circles / Arc Length · easy
The length of an arc of a circle of radius 4 cm is π cm. What is the magnitude of the angle subtended by the arc at the centre?
- A.π
- B.π/2
- C.π/3
- D.π/4✓ Correct
Arc length = radius × angle (in radians), so angle = arc/radius = π/4 radians.
💡
Practice unlimited CDS PYQs + AI-tracked progress on each topic.
Sign up free →Want more CDS practice?
Free daily 10-Q quiz · adaptive mocks · 4,000+ verified PYQs · AI doubt solver in Hindi + English