Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Oct 2014, 23:54

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Does the rectangle have an area less than 30?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
2 KUDOS received
SVP
SVP
User avatar
Joined: 05 Jul 2006
Posts: 1541
Followers: 5

Kudos [?]: 83 [2] , given: 39

Does the rectangle have an area less than 30? [#permalink] New post 18 Aug 2009, 17:43
2
This post received
KUDOS
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

75% (01:44) correct 25% (01:53) wrong based on 14 sessions
Does the rectangle have an area less than 30?

(1) Perimeter = 20
(2) Diagonal < 10
2 KUDOS received
Manager
Manager
User avatar
Joined: 14 Aug 2009
Posts: 123
Followers: 2

Kudos [?]: 91 [2] , given: 13

Re: Does the rectangle have an area less than 30? [#permalink] New post 19 Aug 2009, 06:08
2
This post received
KUDOS
yezz wrote:
Does the rectangle have an area less than 30?
(1) Perimeter = 20
(2) Diagonal < 10


for (1), perimeter = 20, therefore the Smax=(20/4)^2=25<30
A sufficient

for (2), suppose X^2+Y^2=100
the area is S=XY=X\sqrt{100-X^2}

when X^2=50 or X=\sqrt{50}, Smax=50>30

So the answer is A
_________________

Kudos me if my reply helps!

Senior Manager
Senior Manager
User avatar
Joined: 22 Dec 2009
Posts: 364
Followers: 10

Kudos [?]: 217 [0], given: 47

GMAT ToolKit User
Re: Does the rectangle have an area less than 30? [#permalink] New post 05 Jan 2010, 13:17
flyingbunny wrote:
yezz wrote:
Does the rectangle have an area less than 30?
(1) Perimeter = 20
(2) Diagonal < 10


for (1), perimeter = 20, therefore the Smax=(20/4)^2=25<30
A sufficient

for (2), suppose X^2+Y^2=100
the area is S=XY=X\sqrt{100-X^2}

when X^2=50 or X=\sqrt{50}, Smax=50>30

So the answer is A


Dont think this is correct....

ST1 - SUFF for sure....
ST2 - gives that area is more than 30... therefore is very much sufficient to answer the question....

Hence answer should be D....
_________________

Cheers!
JT...........
If u like my post..... payback in Kudos!! :beer

|Do not post questions with OA|Please underline your SC questions while posting|Try posting the explanation along with your answer choice|
|For CR refer Powerscore CR Bible|For SC refer Manhattan SC Guide|


~~Better Burn Out... Than Fade Away~~

Senior Manager
Senior Manager
User avatar
Joined: 22 Dec 2009
Posts: 364
Followers: 10

Kudos [?]: 217 [0], given: 47

GMAT ToolKit User
Re: Does the rectangle have an area less than 30? [#permalink] New post 05 Jan 2010, 13:20
jeeteshsingh wrote:
flyingbunny wrote:
yezz wrote:
Does the rectangle have an area less than 30?
(1) Perimeter = 20
(2) Diagonal < 10


for (1), perimeter = 20, therefore the Smax=(20/4)^2=25<30
A sufficient

for (2), suppose X^2+Y^2=100
the area is S=XY=X\sqrt{100-X^2}

when X^2=50 or X=\sqrt{50}, Smax=50>30

So the answer is A


Dont think this is correct....

ST1 - SUFF for sure....
ST2 - gives that area is more than 30... therefore is very much sufficient to answer the question....

Hence answer should be D....


Oops.... sorry its A.... :) My mistake... I failed to consider that diagonal is less than 10.. hence the area could be 50 or less.....
_________________

Cheers!
JT...........
If u like my post..... payback in Kudos!! :beer

|Do not post questions with OA|Please underline your SC questions while posting|Try posting the explanation along with your answer choice|
|For CR refer Powerscore CR Bible|For SC refer Manhattan SC Guide|


~~Better Burn Out... Than Fade Away~~

Manager
Manager
avatar
Joined: 27 Aug 2009
Posts: 147
Followers: 2

Kudos [?]: 13 [0], given: 1

Re: Does the rectangle have an area less than 30? [#permalink] New post 05 Jan 2010, 14:31
Clearly answer is A
Manager
Manager
avatar
Joined: 24 Jul 2009
Posts: 193
Location: Anchorage, AK
Schools: Mellon, USC, MIT, UCLA, NSCU
Followers: 4

Kudos [?]: 23 [0], given: 10

Re: Does the rectangle have an area less than 30? [#permalink] New post 09 Jan 2010, 20:20
Can someone provide another example for why STMT 2 is insufficient?
I can see that the area's < 48 since the diagonal's < 10.
_________________

Reward wisdom with kudos. ;)

Manager
Manager
avatar
Joined: 24 Jul 2009
Posts: 193
Location: Anchorage, AK
Schools: Mellon, USC, MIT, UCLA, NSCU
Followers: 4

Kudos [?]: 23 [0], given: 10

Re: Does the rectangle have an area less than 30? [#permalink] New post 09 Jan 2010, 20:40
gottabwise wrote:
Can someone provide another example for why STMT 2 is insufficient?
I can see that the area's < 48 since the diagonal's < 10.


Rephrase of ? - Are l & w < 5 & 6?
(1) 2l+2w=20 l+w=10 max 5, 5; max area 25; 25<30 SUFF
(2) 1/2 rectangle=right triangle; a^2+b^2=c^2 c<10 (6-8-10 right triangle); sides less than 6 & 8
given that, does the possibility of the l & w being any combo of #'s < 6&8 make it INS?
_________________

Reward wisdom with kudos. ;)

Intern
Intern
avatar
Joined: 29 Oct 2009
Posts: 33
Followers: 0

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

Re: Does the rectangle have an area less than 30? [#permalink] New post 09 Jan 2010, 22:47
Thanks for the g8 explanation
Re: Does the rectangle have an area less than 30?   [#permalink] 09 Jan 2010, 22:47
    Similar topics Author Replies Last post
Similar
Topics:
2 Experts publish their posts in the topic Does rectangle A have a greater perimeter than rectangle B? tt11234 5 28 Jul 2010, 04:45
If ABCE is a rectangle, is the area of greater than the area sbasha 2 31 Aug 2009, 10:35
Does rectangle A have a greater perimeter than rectangle B? joemama142000 1 04 Nov 2005, 11:16
Is the area of rectangle A greater than the area of qhoc0010 11 23 Feb 2005, 09:46
Is the area of rectangle A greater than the area of venksune 2 05 Dec 2004, 05:00
Display posts from previous: Sort by

Does the rectangle have an area less than 30?

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

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®.