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If the length of an arc of a circle subtending an angle $60^\circ$ at its centre is $22$ cm, then the radius of the circle is :
- (a)$\sqrt{21}$ cm
- (b)$21$ cm
- (c)$\sqrt{42}$ cm
- (d)$42$ cm
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(B) $21$ cm
If the length of an arc of a circle subtending an angle 60° at its centre is 22 cm, then the radius of the circle is :
CBSE Class 10 Maths PYQ · Areas Related to Circles · Perimeter sector · 1 Mark · March 2024 · Standard
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