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Question

Calculate the length of an arc which subtends an angle of 60∘60^\circ at the centre of a circle of radius 7 cm7\text{ cm}. [Take π=227\pi = \frac{22}{7}]

Verified Answer

7.33 cm7.33\text{ cm}

Explanation & Step-by-Step Solving

Context: Using the arc length formula L=θ360×2πrL = \frac{\theta}{360} \times 2\pi r:L=60360×2×227×7=16×44=223≈7.33 cmL = \frac{60}{360} \times 2 \times \frac{22}{7} \times 7 = \frac{1}{6} \times 44 = \frac{22}{3} \approx 7.33\text{ cm}

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Exam aration and answersWAEC Exam arationJAMB Exam arationacademic problems

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