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

 It is currently 17 Nov 2019, 22:45

### 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

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

# In the figure above, the circle with center O has an area of 25π. What

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 59095
In the figure above, the circle with center O has an area of 25π. What  [#permalink]

### Show Tags

23 Oct 2019, 01:11
00:00

Difficulty:

5% (low)

Question Stats:

94% (00:40) correct 6% (00:35) wrong based on 35 sessions

### HideShow timer Statistics

In the figure above, the circle with center O has an area of 25π. What is the area of square ABCD ?

A. 5
B. 10
C. 25
D. 50
E. 100

Attachment:

2018-11-12_1308.png [ 25.6 KiB | Viewed 331 times ]

_________________
Senior Manager
Joined: 29 Jun 2019
Posts: 467
Re: In the figure above, the circle with center O has an area of 25π. What  [#permalink]

### Show Tags

23 Oct 2019, 07:04
25π=πr²
r²=25,r=5
2r=10
10×10=100

Posted from my mobile device
_________________
Always waiting
Board of Directors
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4832
Location: India
GPA: 3.5
Re: In the figure above, the circle with center O has an area of 25π. What  [#permalink]

### Show Tags

23 Oct 2019, 07:32
Bunuel wrote:

In the figure above, the circle with center O has an area of 25π. What is the area of square ABCD ?

A. 5
B. 10
C. 25
D. 50
E. 100

Attachment:
2018-11-12_1308.png

$$πr^2 = 25π$$

Or, $$r^2 = 25$$

Or, $$r = 5$$

Diameter of the Circle = Sides of the Square = 10

SO, Area of the Square is $$10^2 = 100$$ , Answer must be (E)
_________________
Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )
Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8394
Location: United States (CA)
Re: In the figure above, the circle with center O has an area of 25π. What  [#permalink]

### Show Tags

27 Oct 2019, 20:00
Bunuel wrote:

In the figure above, the circle with center O has an area of 25π. What is the area of square ABCD ?

A. 5
B. 10
C. 25
D. 50
E. 100

Attachment:
2018-11-12_1308.png

A = πr^2

25π = πr^2

25 = r^2

5 = r

The circle’s radius = 5, and its diameter = side of square = 10, so the area of the square is 100.

_________________

# Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
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.

Re: In the figure above, the circle with center O has an area of 25π. What   [#permalink] 27 Oct 2019, 20:00
Display posts from previous: Sort by