Circles, Arcs & Sectors Quiz
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5 questions, one answer each
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1. What is the circumference of a circle with radius 7 cm, in terms of π?
- A. 7π cm
- B. 14π cm
- C. 49π cm
- D. 21π cm
2. What is the area of a circle with radius 3 cm, in terms of π?
- A. 3π cm²
- B. 6π cm²
- C. 9π cm²
- D. 12π cm²
3. A sector has a central angle of 90° in a circle of radius 8 cm. What is the arc length (use π ≈ 3.142)?
- A. 4.19 cm
- B. 6.28 cm
- C. 12.57 cm
- D. 25.14 cm
4. A sector has central angle 60° in a circle of radius 6 cm. What is its area (use π ≈ 3.142)?
- A. 6.28 cm²
- B. 9.42 cm²
- C. 18.85 cm²
- D. 37.70 cm²
5. A circle has a minor arc of 40° and a major arc making up the rest. What is the angle of the major arc?
- A. 140°
- B. 220°
- C. 320°
- D. 360°