Question : Find the length of the arc if the angle at the centre of the circle of radius 7 units is 60°.
Option 1: $4$ units
Option 2: $\frac{11}{4}$ units
Option 3: $\frac{22}{3}$ units
Option 4: $21$ units
New: SSC CHSL Tier 2 answer key released | SSC CHSL 2024 Notification PDF
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: $\frac{22}{3}$ units
Solution : Given: The radius of the circle: 7 units The angle at the centre is 60°. Length of arc = $\frac{θ}{360°} × 2πr$, here $r$ is the radius and $\theta$ is the angle at centre. ⇒ Length of the arc = $\frac{60°}{360°} × 2 × \frac{22}{7} × 7=\frac{22}{3}$ units Hence, the correct answer is $\frac{22}{3}$ units.
Candidates can download this e-book to give a boost to thier preparation.
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Question : In a circle with centre O, arc CD subtends an angle of 60° at the centre of the circle whose radius is 21 cm. Calculate the length of the arc CD.
Question : In a circle, an arc subtends an angle of 84° at the centre. If the length of the arc is 22 cm, then the radius of the circle (in cm) is equal to: Take $\pi=\frac{22}{7}$
Question : The radius of a circle is 21 cm. What will be the length (in cm) of an arc of the circle that subtends a 22.5° angle at the centre? [Use $\pi=\frac{22}{7}$]
Question : In a circle of radius 14 cm, an arc subtends an angle of 90° at the centre. The length of are (in cm) is equal to: (Take $\pi=\frac{22}{7}$)
Question : Find the length of the arc whose central angle is 45° and the radius of the circle is 28 cm.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile