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 ...
Result | Eligibility | Application | Selection Process | 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
Application Date:
5 Nov, 2024
- 20 Nov, 2024
Result Date:
4 Nov, 2024
- 11 Nov, 2024
Preliminary Exam
Admit Card Date:
31 Oct, 2024
- 9 Nov, 2024
Exam Date:
17 Nov, 2024
- 17 Nov, 2024
Tier II
Exam Date:
18 Nov, 2024
- 18 Nov, 2024
