Find all School-related info fast with the new School-Specific MBA Forum

It is currently 21 Oct 2014, 07:51

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Length of Minor arc given internal angle - GmatPrep

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Status: Applying Now
Joined: 21 Nov 2009
Posts: 65
WE: Project Management (Manufacturing)
Followers: 3

Kudos [?]: 54 [0], given: 3

Length of Minor arc given internal angle - GmatPrep [#permalink] New post 13 Dec 2009, 11:49
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

67% (00:00) correct 33% (00:00) wrong based on 9 sessions
Got the following question. Wondering how to solve it



[Reveal] Spoiler:
A

Attachments

lengthOfMinorArc.GIF
lengthOfMinorArc.GIF [ 8.86 KiB | Viewed 1817 times ]


_________________

http://gmatclub.com/forum/insead-campus-visit-debrief-91669.html#p702796

If you like my post, consider giving me a kudos. THANKS!

VP
VP
avatar
Joined: 05 Mar 2008
Posts: 1477
Followers: 11

Kudos [?]: 201 [0], given: 31

Re: Length of Minor arc given internal angle - GmatPrep [#permalink] New post 13 Dec 2009, 12:05
msunny wrote:
Got the following question. Wondering how to solve it



[Reveal] Spoiler:
A


Lets say the circle has center C
PCO angle = 70 (by definition since PRO = 35)
Since lines are parallel QCR also has 70
OR = 180

70 + 70 + 180 = 320 therefore PCQ = 40 degrees

circumference = 18pi

40/360 * 18pi = 2pi
Intern
Intern
avatar
Joined: 13 Oct 2009
Posts: 22
Location: Hyderabad
Schools: ISB, UCLA,Darden
Followers: 0

Kudos [?]: 3 [0], given: 1

Re: Length of Minor arc given internal angle - GmatPrep [#permalink] New post 16 Dec 2009, 23:34
Hi lagomez,
when two lines are parallel and there are two transversals cuttting them, then it doesn't necessarily mean that the angles should be equal i.e. anlge PCO is not necessary equal to angle PRO.

My method was :
Let C be the centre of circle
Consider triangle CPR, since CP=CR(radius), angle CPR=angle CRP=35
which means that angle CPQ=70

Consider triangle CPQ.
Since CP=CQ=radius, angle CPQ=ANGLE CQP=70
Therefor,angle PCQ=180-140=40

Hence, length of minor arc PQ=9*(40pi/180)=2pi




lagomez wrote:
msunny wrote:
Got the following question. Wondering how to solve it



[Reveal] Spoiler:
A


Lets say the circle has center C
PCO angle = 70 (by definition since PRO = 35)
Since lines are parallel QCR also has 70
OR = 180

70 + 70 + 180 = 320 therefore PCQ = 40 degrees

circumference = 18pi

40/360 * 18pi = 2pi
Re: Length of Minor arc given internal angle - GmatPrep   [#permalink] 16 Dec 2009, 23:34
    Similar topics Author Replies Last post
Similar
Topics:
5 Experts publish their posts in the topic The length of minor arc AB is twice the length of minor arc enigma123 10 11 Feb 2012, 13:55
The length of minor arc AB is twice the length of minor arc jimmyjamesdonkey 3 07 Jul 2008, 16:16
How can you differentiate inscribed angle from minor arc redbeanaddict 2 20 Jun 2008, 00:37
Experts publish their posts in the topic The length of minor arc AB is twice the length of minor arc pinal2 7 17 Dec 2007, 12:48
can somebody tell me how to find the length of the minor arc vprabhala 2 25 Dec 2004, 19:21
Display posts from previous: Sort by

Length of Minor arc given internal angle - GmatPrep

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.