It is currently 24 Feb 2018, 19:36

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

A dog is tied to a tree by a long nylon cord. If the

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Senior Manager
Senior Manager
User avatar
Joined: 21 Oct 2013
Posts: 444
A dog is tied to a tree by a long nylon cord. If the [#permalink]

Show Tags

New post 25 Mar 2014, 07:47
4
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

58% (00:54) correct 42% (00:49) wrong based on 137 sessions

HideShow timer Statistics

A dog is tied to a tree by a long nylon cord. If the dog runs from the due North side of the tree to the due South side of the tree with the cord extended to its full length at all items, and the dog ran approximately 30 feet, what was the approximate length of the nylon cord, in feet?

A) 30
B) 25
C) 15
D) 10
E) 5
[Reveal] Spoiler: OA
2 KUDOS received
Senior Manager
Senior Manager
avatar
Status: busyness school student
Joined: 09 Sep 2013
Posts: 419
Location: United States
Schools: Tepper '16 (M)
GMAT 1: 730 Q52 V37
Premium Member
Re: A dog is tied to a tree by a long nylon cord. If the [#permalink]

Show Tags

New post 25 Mar 2014, 07:54
2
This post received
KUDOS
Because the cord was extended to its full length at all items, the dog ran along a semi-circular path, from north to south.

The circumference of a full circle is 2*pi*r, but since we only care about the length of half the circle, the semi-circle path is pi*r.

pi*r = 30. Round pi = 3, then r = 10.

Chord is about 10 feet long.
_________________

My review of some of the CAT practice exams
You can usually find me on gmatclub's chat.

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 13760
Premium Member
Re: A dog is tied to a tree by a long nylon cord. If the [#permalink]

Show Tags

New post 12 May 2017, 13:45
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.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Manager
Manager
User avatar
B
Joined: 02 Aug 2013
Posts: 64
Location: India
Concentration: Technology, Leadership
WE: Programming (Consulting)
GMAT ToolKit User
Re: A dog is tied to a tree by a long nylon cord. If the [#permalink]

Show Tags

New post 15 May 2017, 23:53
the dog runs from the due North side of the tree to the due South side of the tree with the cord extended to its full length at all times. This means that dog ran in semi - circle or 180 degree sector is create.

We know that length of arc = (\(\frac{central angle}{360}\) ) * 2* PI * r
therefore, = \(\frac{180}{360}\)* 2* PI * r = 30

=> PI * r = 30
3.142 * r = 30

r= 10 (approx)
Re: A dog is tied to a tree by a long nylon cord. If the   [#permalink] 15 May 2017, 23:53
Display posts from previous: Sort by

A dog is tied to a tree by a long nylon cord. If the

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.