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

It is currently 20 Jan 2019, 11:21

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 in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar

The figure above contains two circles with center O. If OD = 10 and th

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

Hide Tags

 
SVP
SVP
User avatar
V
Status: Preparing GMAT
Joined: 02 Nov 2016
Posts: 2034
Location: Pakistan
GPA: 3.39
Premium Member CAT Tests
The figure above contains two circles with center O. If OD = 10 and th  [#permalink]

Show Tags

New post 01 May 2017, 10:00
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

100% (01:13) correct 0% (00:00) wrong based on 24 sessions

HideShow timer Statistics

The figure above contains two circles with center O. If OD = 10 and the area of the shaded region is 36π, what is the area of the smaller circle?

A. 6π
B. 10π
C. 36π
D. 64π
E. 100π

Attachments

123.jpg
123.jpg [ 20.03 KiB | Viewed 568 times ]


_________________

Final days of the GMAT Exam? => All GMAT Flashcards.
This Post Helps = Press +1 Kudos
Best of Luck on the GMAT!!

Senior PS Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 3334
Location: India
GPA: 3.12
Premium Member CAT Tests
Re: The figure above contains two circles with center O. If OD = 10 and th  [#permalink]

Show Tags

New post 01 May 2017, 10:53
If OD is 10, the area of the outer circle is pi*10*10 or 100pi as OD is the radius of the outer circle.

But we also know that the area of the shaded portion is 36pi. From this information we can deduce the area of the inner circle to be the difference between the entire circle's area and the shaded region's area
100pi-36pi = 64pi(Option D)
_________________

You've got what it takes, but it will take everything you've got

GMAT Club Bot
Re: The figure above contains two circles with center O. If OD = 10 and th &nbs [#permalink] 01 May 2017, 10:53
Display posts from previous: Sort by

The figure above contains two circles with center O. If OD = 10 and th

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| 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®.