JAMB Mathematics 2025 Objective — Question 30
Question 30 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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The angle subtended by an arc of a circle at the centre is 120°. If the radius is 7cm, what is the length of the arc?
- A. 28/3 cm
- B. 22/3 cm
- C. 44 cm
- D. 44/3 cmCorrect
Explanation
Arc length = (θ/360)×2πr = (120/360)×2×(22/7)×7 = 44/3 cm.
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