Last visit was: 31 Oct 2024, 16:09 It is currently 31 Oct 2024, 16:09
Close
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

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.
Close
Request Expert Reply
Confirm Cancel
User avatar
Game
Joined: 11 Feb 2014
Last visit: 19 Nov 2014
Posts: 49
Own Kudos:
230
 [10]
Given Kudos: 25
Posts: 49
Kudos: 230
 [10]
2
Kudos
Add Kudos
8
Bookmarks
Bookmark this Post
Most Helpful Reply
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 31 Oct 2024
Posts: 96,533
Own Kudos:
Given Kudos: 87,883
Products:
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 96,533
Kudos: 673,098
 [10]
4
Kudos
Add Kudos
6
Bookmarks
Bookmark this Post
General Discussion
User avatar
rrsnathan
Joined: 30 May 2013
Last visit: 04 Aug 2014
Posts: 124
Own Kudos:
Given Kudos: 72
Location: India
Concentration: Entrepreneurship, General Management
GPA: 3.82
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
mvictor
User avatar
Board of Directors
Joined: 17 Jul 2014
Last visit: 14 Jul 2021
Posts: 2,138
Own Kudos:
Given Kudos: 236
Location: United States (IL)
Concentration: Finance, Economics
GMAT 1: 650 Q49 V30
GPA: 3.92
WE:General Management (Transportation)
Products:
GMAT 1: 650 Q49 V30
Posts: 2,138
Kudos: 1,210
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Game
Line RS is tangent to circles P and Q at points R and S. Find the length of segment RS


A. \(15\sqrt{2}\)
B. \(20\sqrt{2}\)
C. \(25\sqrt{2}\)
D. \(30\sqrt{2}\)
E. \(35\sqrt{2}\)

Source: https://ceemrr.com/

Attachment:
Untitled.png
Draw perpendicular from Q to PR. Notice that we'll get rectangle RSQT, so RS = QT.

\(QT = 30^2-10^2=\sqrt{800}=20\sqrt{2}\).

Answer: B.

oh wow..how simple...i used lengthy approximations to get to the answer choice...
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 35,330
Own Kudos:
Posts: 35,330
Kudos: 902
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Moderator:
Math Expert
96533 posts