It is currently 21 Oct 2017, 15:01

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

What is the area of circle ? (1) The ratio of the

Author Message
TAGS:

Hide Tags

Manager
Joined: 14 Mar 2011
Posts: 198

Kudos [?]: 132 [0], given: 21

What is the area of circle ? (1) The ratio of the [#permalink]

Show Tags

13 Oct 2011, 07:19
00:00

Difficulty:

55% (hard)

Question Stats:

48% (00:31) correct 52% (00:33) wrong based on 27 sessions

HideShow timer Statistics

What is the area of circle ?

(1) The ratio of the circumference of the circle D to the diameter of the circle D is 22/7 :1

(2) The number of the sqaure units of the area of the sector with an angle of measure 60 degree is two times the number of units of the length of an arc with an angle of measure 30 degree.

[Reveal] Spoiler:
My doubt- the question didn't provide any standard measure of length such a cm,m,km...so i thought the answer should E because if we ask what is the area....just any answer like area is 100 doesnot makes sense. Don't we need a standard unit to measure the area ?
[Reveal] Spoiler: OA

Kudos [?]: 132 [0], given: 21

Math Forum Moderator
Joined: 20 Dec 2010
Posts: 1964

Kudos [?]: 2054 [0], given: 376

Re: What is the area of circle ? [#permalink]

Show Tags

13 Oct 2011, 08:19
Aj85 wrote:
What is the area of circle ?

(1) The ratio of the circumference of the circle D to the diameter of the circle D is 22/7 :1

(2) The number of the sqaure units of the area of the sector with an angle of measure 60 degree is two times the number of units of the length of an arc with an angle of measure 30 degree.

[Reveal] Spoiler:
My doubt- the question didn't provide any standard measure of length such a cm,m,km...so i thought the answer should E because if we ask what is the area....just any answer like area is 100 doesnot makes sense. Don't we need a standard unit to measure the area ?

Your doubt is valid, but it is not required for GMAT. I know it's bizarre, but that's how GMAT works sometimes. So, area in any unit is fine. B is correct.
_________________

Kudos [?]: 2054 [0], given: 376

Senior Manager
Joined: 18 Sep 2009
Posts: 356

Kudos [?]: 590 [0], given: 2

Re: What is the area of circle ? [#permalink]

Show Tags

14 Oct 2011, 07:49
Hai i have a doubt in the statement 1. we can rephrase the statement 1 as

circumference/diameter=pi*d/d since pi=22/7.
pi*d/d=3*1/1,so diameter is 1 and radius is 1/2. sufficient to answer the question.

Please correct me if i am wrong.

Kudos [?]: 590 [0], given: 2

Manager
Joined: 20 Aug 2011
Posts: 144

Kudos [?]: 106 [0], given: 0

Re: What is the area of circle ? [#permalink]

Show Tags

14 Oct 2011, 08:52
TomB wrote:
Hai i have a doubt in the statement 1. we can rephrase the statement 1 as

circumference/diameter=pi*d/d since pi=22/7.
pi*d/d=3*1/1,so diameter is 1 and radius is 1/2. sufficient to answer the question.

Please correct me if i am wrong.

It's incorrect.

The ratio of the circumference of the circle D to the diameter of the circle D is always 22/7 :1

You can try calculating that ratio for different values of r.
_________________

Hit kudos if my post helps you.
You may send me a PM if you have any doubts about my solution or GMAT problems in general.

Kudos [?]: 106 [0], given: 0

Manager
Joined: 14 Mar 2011
Posts: 198

Kudos [?]: 132 [0], given: 21

Re: What is the area of circle ? [#permalink]

Show Tags

14 Oct 2011, 13:33
fluke wrote:

Your doubt is valid, but it is not required for GMAT. I know it's bizarre, but that's how GMAT works sometimes. So, area in any unit is fine. B is correct.

thanks fluke....I guess sometimes one has to face ambiguous questions, at least one may feel so. I hope i dont face such a question on test. i did in fact almost lock the answer choice B but at very last second idea came that without a standard measure unit the answer will make no sense. this was last question of kaplan practise test 2 (linear).

Kudos [?]: 132 [0], given: 21

Director
Joined: 28 Jun 2011
Posts: 879

Kudos [?]: 244 [0], given: 57

Re: What is the area of circle ? [#permalink]

Show Tags

17 Oct 2011, 14:14

Kudos [?]: 244 [0], given: 57

Re: What is the area of circle ?   [#permalink] 17 Oct 2011, 14:14
Display posts from previous: Sort by

What is the area of circle ? (1) The ratio of the

 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®.