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

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 350,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

[quote="mystery"]How long is the diagnosal through the center of a particular cube?

1. A diagnosal across one face is 4.24 centimeters.
2.The surface area of the cube is 54 centimeters.

Please explain.

thanks!![/quote]

I think the answer is D

1-Sufficient
We must know that the square root (SQR; don't know how to do the symbol with the keyboard) of 2 = 1.414...., so 3sqr2= 4.24
And we also know that a cube has a squared surface, hence, its diagonal is similar to that of 90-45-45 triangle, which has the form Xsqr2.
Now of course, we know that we are talking about a 3 cm-sided cube.
But since the question is related to the diagonal that goes through the center of the cube, using the Pythagorean theorem, we just find the hypotenuse of the right triangle with sides 3 and, 3sqr2

2- Sufficient

54=6*(side^2); side=3; and then the reasoning is the same used above.

Type of Visa: You will be applying for a Non-Immigrant F-1 (Student) US Visa. Applying for a Visa: Create an account on: https://cgifederal.secure.force.com/?language=Englishcountry=India Complete...

I started running back in 2005. I finally conquered what seemed impossible. Not sure when I would be able to do full marathon, but this will do for now...