|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
18 Jun 2025, 11:34
Kudos
Bookmarks
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
75% (00:18) correct
25% (00:23) wrong based on 4 sessions
History
Date
Time
Result
Not Attempted Yet
What is the circumference of a circle whose area is \(10π\)?
A. \(5π\)
B. \(10π\)
C. \(π \sqrt{10}\)
D. \(2π\sqrt{10}\)
E. \(π \sqrt{20}\)
A. \(5π\)
B. \(10π\)
C. \(π \sqrt{10}\)
D. \(2π\sqrt{10}\)
E. \(π \sqrt{20}\)
20 Jun 2025, 01:17
Kudos
Bookmarks
OE
Since the area of a circle is given by the formula \(A = πr^2,\) we have
\(πr^2=10π\)
\(=r^2=10\)
\(=r=\sqrt{10}\)
The circumference is given by the formula C = 2πr, so \(c=2π\sqrt{10}.\)
Answer: D
Since the area of a circle is given by the formula \(A = πr^2,\) we have
\(πr^2=10π\)
\(=r^2=10\)
\(=r=\sqrt{10}\)
The circumference is given by the formula C = 2πr, so \(c=2π\sqrt{10}.\)
Answer: D
