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.
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
13 Sep 2018, 02:33
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
50% (01:39) correct
50%
(01:47)
wrong
based on 130
sessions
History
Date
Time
Result
Not Attempted Yet
What is the length of diameter PR in the circle shown above?
(1) PQ has length of 6.
(2) QR has length of \(\sqrt{12}\)
Attachment:
image001.jpg [ 3.88 KiB | Viewed 3226 times ]
13 Sep 2018, 03:10
Kudos
Bookmarks
Bunuel
Question: Diameter = a+b = ?
We must know that we see here three right angle triangles and all triangles are similar triangles (Proof attached)
and \(3/a = b/3\)
Statement 1: PQ has length of 6
i.e. \(a = √(6^2-3^2) = 3√3\)
And now \(b = √3\)
SUFFICIENT
Statement 2: QR has length of \(\sqrt{12}\)
Now b can be calculated using pythagorus theorem and then a can be calculated as a*b=9 hence
SUFFICIENT
Answer: option D
Attachments
Geometry 7 Similar Triangle Latest.jpg [ 195.88 KiB | Viewed 3098 times ]
01 Dec 2018, 06:25
Kudos
Bookmarks
https://gmatclub.com/forum/if-arc-pqr-above-is-a-semicircle-what-is-the-length-of-diameter-pr-144057.html
Bunnel and other experts posted great detailed solution for similar problem in the above link.
Hope it helps
Bunnel and other experts posted great detailed solution for similar problem in the above link.
Hope it helps
