|
|
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.
04 Dec 2017, 23:02
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
78% (00:24) correct
22%
(01:18)
wrong
based on 68
sessions
History
Date
Time
Result
Not Attempted Yet
In the cube shown above, what is the length of diagonal AB?
(A) 1
(B) √2
(C) √3
(D) 2√2
(E) 3
Attachment:
2017-12-05_0959.png [ 6.73 KiB | Viewed 7163 times ]
05 Dec 2017, 00:22
Kudos
Bookmarks
Bunuel
\((one side diagonal)^2 = 1^2 + 1^2 = 2\)
(\(Cube's diagonal)^2 = 1^2 + 2 = 3\) => Hence, \(\sqrt3\) is the answer
05 Dec 2017, 09:20
Kudos
Bookmarks
Bunuel
To find the length of a space diagonal, \(d\), (corner to corner between non-adjacent faces), use a variation of the Pythagorean theorem:
\(L^2 + H^2 + W^2= d^2\)
\(L = H = W = 1\)
\(L^2 + H^2 + W^2= d^2\)
\(3 = d^2\)
\(d = \sqrt{3}\)
Answer C
