Find the length of the arc of a circle which subtends an angle of 60° at the centre of the circle of radius 42 cm.
CBSE Class 10 Maths PYQ · Areas Related to Circles · Perimeter sector · 2 Marks · March 2024 · Standard
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372 Marks · March 2024 · Standard
Find the length of the arc of a circle which subtends an angle of $60^\circ$ at the centre of the circle of radius $42$ cm.
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Length of arc $$\begin{aligned}& = 2 \times \frac{22}{7} \times 42 \times \frac{60}{360} \\ & = 44 \text{ cm}\end{aligned}$$