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

It is currently 18 Oct 2019, 04:14

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

In the circle above, central angle AOB measures 120 degrees. If the ra

  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: 58458
In the circle above, central angle AOB measures 120 degrees. If the ra  [#permalink]

Show Tags

New post 17 Jan 2019, 04:25
2
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

96% (00:38) correct 4% (01:04) wrong based on 32 sessions

HideShow timer Statistics

e-GMAT Representative
User avatar
V
Joined: 04 Jan 2015
Posts: 3074
Re: In the circle above, central angle AOB measures 120 degrees. If the ra  [#permalink]

Show Tags

New post 17 Jan 2019, 06:58

Solution


Given:
    • Angle AOB = 120 degrees
    • Radius of the circle = 3

To find:
    • The area of sector AOB

Approach and Working:
    • Area of sector AOB = \(\frac{120}{360} * ᴨ * 3^2 = 3ᴨ\)

Hence, the correct answer is Option B

Answer: B

Image

_________________
GMAT Club Legend
GMAT Club Legend
User avatar
D
Joined: 18 Aug 2017
Posts: 5017
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member
Re: In the circle above, central angle AOB measures 120 degrees. If the ra  [#permalink]

Show Tags

New post 17 Jan 2019, 08:39
Bunuel wrote:
Image
In the circle above, central angle AOB measures 120 degrees. If the radius of the circle is 3, what is the area of sector AOB?

A 3π/2
B 3π
C 6π
D 9π
E 18π



120/360 * 2 * pi * 3 * 3

solve
we get area = 3 pi
IMO B
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8099
Location: United States (CA)
Re: In the circle above, central angle AOB measures 120 degrees. If the ra  [#permalink]

Show Tags

New post 21 Jan 2019, 19:05
Bunuel wrote:
Image
In the circle above, central angle AOB measures 120 degrees. If the radius of the circle is 3, what is the area of sector AOB?

A 3π/2
B 3π
C 6π
D 9π
E 18π


Since the radius of the circle is 3, the area of the circle is π x 3^2 = 9π.

Since the central angle, corresponding to the sector AOB, is 120/360 = 1/3 of the circle, the area of the sector is 1/3 x 9π = 3π.

Answer: B
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

GMAT Club Bot
Re: In the circle above, central angle AOB measures 120 degrees. If the ra   [#permalink] 21 Jan 2019, 19:05
Display posts from previous: Sort by

In the circle above, central angle AOB measures 120 degrees. If the ra

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





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