Question : The area of a circle is 1386 cm2. What is the radius of the circle?
[Use $\pi= \frac{22}{7}$]
Option 1: 7 cm
Option 2: 14 cm
Option 3: 18 cm
Option 4: 21 cm
Answer (1)
23rd Jan, 2024
Correct Answer: 21 cm
Solution :
The area of a circle is $\pi r^2$, where $r$ is the radius of the circle.
Given that the area = 1386 cm
2
$⇒1386 = \frac{22}{7} r^2$
$⇒r^2=441$
$⇒r = 21$
Hence, the correct answer is 21 cm.
Comments (0)
Related Questions
Know More about
Staff Selection Commission Sub Inspector ...
Application | Eligibility | Selection Process | Result | Cutoff | Admit Card | Preparation Tips
Get Updates Brochure
Thank You!
Your Staff Selection Commission Sub Inspector Exam brochure has been successfully mailed to your registered email id “”.
Upcoming Exams
Admit Card Date:
7 Nov, 2025
- 4 Dec, 2025
Mains Exam
Admit Card Date:
30 Oct, 2025
- 9 Nov, 2025
Tier I
Application Date:
24 Oct, 2025
- 23 Nov, 2025
Application Date:
21 Oct, 2025
- 20 Nov, 2025
Trending Articles around SSC CPO
SSC JHT 2025 - Paper 1 Result (Out), Cutoff, Answer key
39 minutes ago
