2020 · Q84
If an arc of a circle of radius 6 cm subtends a central angle measuring 30°, then which one of the following is an approximate length of the arc?
Elementary MathematicsCircles
- A3.14 cm
- B2.15 cm
- C2.14 cm
- D2 cm
Explanation
Arc length = rθ = 6 × π/6 = π ≈ 3.14 cm. π/6 radians is 30°. Hence the arc measures π cm, about 3.14 cm.