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 $\pi=\frac{22}{7}$]
Option 1: 8.25
Option 2: 7.25
Option 3: 8.50
Option 4: 7.50
New: SSC CHSL tier 1 answer key 2024 out | 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
Correct Answer: 8.25
Solution :
We know that arc length = $\frac{2\pi r \times \theta}{360}$
So, given $\theta = 22.5°$
Radius of circle = $21$ cm
$\therefore$ Length of the arc = $\frac{2 \times 22 \times 21 \times 22.5}{360 \times 7}$ = 8.25 cm
Hence, the correct answer is 8.25.
Related Questions
Know More about
Staff Selection Commission Combined High ...
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Get Updates Brochure
Your Staff Selection Commission Combined Higher Secondary Level Exam brochure has been successfully mailed to your registered email id “”.
