Events & Promotions
|
|
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.
May 2110:00 AM EDT
-11:59 PM EDT
Make the most of your break with the most realistic GMAT™ prep. Take up to $700 off select products.
May 2808:30 AM PDT
-09:30 AM PDT
Are you constantly rereading GMAT RC passages but still struggling to understand them? Most students think rereading improves accuracy — but in reality, it usually signals a flawed reading strategy.- Jun 10
06:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
26 Apr 2019, 07:05
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
74% (01:28) correct
26%
(01:39)
wrong
based on 2024
sessions
History
Date
Time
Result
Not Attempted Yet
The figure above shows a drop-leaf table. With all four leaves down the tabletop is a square, and with all four leaves up the tabletop is a circle. What is the radius, in meters, of the tabletop when all four leaves are up?
A. 1/2
B. \(\frac{\sqrt{2}}{2}\)
C. 1
D. \(\sqrt{2}\)
E. 2
PS26602.01
Quantitative Review 2020 NEW QUESTION
Attachment:
2019-04-26_1803.png [ 9.81 KiB | Viewed 27142 times ]
23 May 2019, 06:41
Kudos
Bookmarks
Solution
Given
In this question, we are given
- • The figure of a drop-leaf table.
• With all four leaves down the tabletop is a square, and with all four leaves up the tabletop is a circle.
To Find
We need to determine
- • The radius, in meters, of the tabletop when all four leaves are up.
Approach & Working
When all four leaves are up, the table will look like the following:
In this case, the diameter of the circle is equal to the diagonal of the table.
- • As the square table has a side length of 1m, its diagonal will be √2 m.
• Hence, diameter of the circular table = √2 m.
• Therefore, radius of the table = (√2)/2 m
Hence, the correct answer is option B.
General Discussion
26 Apr 2019, 12:38
Kudos
Bookmarks
Bunuel
We can use simple geometric rules to solve this problem, a Precise approach.
The radius of the circle is half its diameter. Since the diameter of the circle is just the diagonal of the (square) tabletop, and since the diagonal of a square with a side of 1 is sqrt(2) (remember your 45-45-90 triangle!), then our answer is 1/2 * sqrt(2).
(B) is our answer.
