GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 18 Oct 2019, 19:47

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

A circle passes through the center of a larger circle, as shown above.

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58453
A circle passes through the center of a larger circle, as shown above.  [#permalink]

Show Tags

New post 02 Sep 2016, 05:54
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

85% (00:58) correct 15% (01:14) wrong based on 169 sessions

HideShow timer Statistics

Manager
Manager
avatar
B
Joined: 03 Jul 2016
Posts: 68
Re: A circle passes through the center of a larger circle, as shown above.  [#permalink]

Show Tags

New post 02 Sep 2016, 06:15
Say R1 and r2 are the radii of the larger circle and smaller circle respectively.

R1 = 2r2

ratio of circumference of the larger to smaller circle is = 2*pie*R1/ 2*pie*r2 => 2

B
GMAT Club Legend
GMAT Club Legend
User avatar
V
Joined: 12 Sep 2015
Posts: 4009
Location: Canada
Re: A circle passes through the center of a larger circle, as shown above.  [#permalink]

Show Tags

New post 02 Sep 2016, 08:23
1
Top Contributor
Bunuel wrote:
Image
A circle passes through the center of a larger circle, as shown above. The circumference of the larger circle is how many times the circumference of the smaller circle?

A. √2
B. 2
C. 3
D. 4
E. 9

Attachment:
T6105.png


As we can see, (the diameter of the smaller circle) = (radius of larger circle)
If we let the diameter of the smaller circle = 1, then the radius of larger circle = 1
This means the DIAMETER of the larger circle = 2

Now let's find the CIRCUMFERENCE of each circle

Formula: circumference = (diameter)(pi)
Circumference of small circle = (1)(pi)
Circumference of larger circle = (2)(pi)

So, the circumference of the larger circle is 2 TIMES the circumference of small circle.

Answer:

RELATED VIDEO

_________________
Test confidently with gmatprepnow.com
Image
Manager
Manager
avatar
G
Joined: 01 May 2016
Posts: 72
Location: United States
Concentration: Finance, International Business
GPA: 3.8
A circle passes through the center and edge of a larger circle, as  [#permalink]

Show Tags

New post 11 Mar 2018, 09:42
Attachment:
12.png
12.png [ 6.75 KiB | Viewed 1332 times ]

A circle passes through the center and edge of a larger circle, as shown above. The diameter of the smaller circle is how many times the radius of the larger circle?

a. 1/4

b. 1/2

c. 1

d. 2

e. 4
_________________
TD
Math Expert
avatar
V
Joined: 02 Aug 2009
Posts: 7978
Re: A circle passes through the center and edge of a larger circle, as  [#permalink]

Show Tags

New post 11 Mar 2018, 10:06
Tridhipal wrote:
Attachment:
12.png

A circle passes through the center and edge of a larger circle, as shown above. The diameter of the smaller circle is how many times the radius of the larger circle?

a. 1/4

b. 1/2

c. 1

d. 2

e. 4



Not a 700+ level question in any way..

You have to be just careful about which circle's dia and which circle's radius..
Clearly the Dia of SMALLER circle=radius of BIGGER circle..
So RATIO =1

C
_________________
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58453
Re: A circle passes through the center of a larger circle, as shown above.  [#permalink]

Show Tags

New post 11 Mar 2018, 11:10
GMAT Club Bot
Re: A circle passes through the center of a larger circle, as shown above.   [#permalink] 11 Mar 2018, 11:10
Display posts from previous: Sort by

A circle passes through the center of a larger circle, as shown above.

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





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