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

It is currently 29 Aug 2014, 10:54

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

ETS: Circle

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 06 Aug 2004
Posts: 4
Followers: 0

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

ETS: Circle [#permalink] New post 15 Sep 2004, 09:54
could n't figure this out...
pls help
Attachments

Doc1.doc [35 KiB]
Downloaded 50 times

To download please login or register as a user

Senior Manager
Senior Manager
avatar
Joined: 05 Feb 2004
Posts: 291
Location: USA
Followers: 1

Kudos [?]: 2 [0], given: 0

GMAT Tests User
 [#permalink] New post 15 Sep 2004, 10:25
I did a silly mistake previously..hence edited!!
B..
basically, 2 squares are formed......two sides of larger square are 80*2 = 160 cm in lengtjh. Similarly, 2 sides of smaller one are 60 *2 = 120 cm in length. Total is 280 cm. Now add 3/4th of the 2 circumferemnces as well:
Big circlr: 3/4*2* Pi*80 = 120Pi
Small circle: 3/4*2*pi*60 = 90Pi

Total = 120pi+90pi+280 = B!!
Manager
Manager
avatar
Joined: 18 Jun 2004
Posts: 105
Location: san jose , CA
Followers: 1

Kudos [?]: 15 [0], given: 0

GMAT Tests User
 [#permalink] New post 16 Sep 2004, 02:51
B it is ,

you don't need to complete calculation if you see there is some cord which is connecting the two discs and and two sectors are left free without cord .

calculate disc 1 = 270/360 * 2* pi*80
cl . disc 2 - 270/360 *2 * pi* 60

= 90pi + 120 pi = 210 pi + the extra length
if look at the choice there is only once choice which is 210 oi + extra B
so the rest you need not calculate .

let me know if their is any flaw in my reasoning .
_________________

---- Hero never chooses Destiny
Destiny chooses Him ......

Director
Director
User avatar
Joined: 16 Jun 2004
Posts: 893
Followers: 1

Kudos [?]: 9 [0], given: 0

GMAT Tests User
 [#permalink] New post 16 Sep 2004, 03:31
My approach was
1. the staight tangent lines connecting the circle = 140+140 = 280.
2. It has to be 280+some Pi stuff (because portion of the circumference of the two circles also need to be added - which would invariably be a pi something).
3. We are now left with B and E options.
4. E is too big - why? 2(pi)(r) of both the circles = 280pi. Surely we need smaller than that (because the cord does not wound the entire circle and only portion of it) and we have only one option in our shortlist and that is B.

We can calculate B for sure if we have time as already outlined by CBRf3 and Rahul.
  [#permalink] 16 Sep 2004, 03:31
    Similar topics Author Replies Last post
Similar
Topics:
circle acer2knight 3 06 Jul 2009, 01:24
Experts publish their posts in the topic circle patrannn 1 20 May 2008, 01:01
circle Ravshonbek 5 30 Aug 2007, 13:46
Circle r0m3416 4 17 Aug 2007, 04:54
Circles ugo_castelo 10 28 Nov 2006, 08:23
Display posts from previous: Sort by

ETS: Circle

  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®.