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

It is currently 16 Feb 2019, 21:53

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 February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
  • Free GMAT Algebra Webinar

     February 17, 2019

     February 17, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this Free Algebra Webinar and learn how to master Inequalities and Absolute Value problems on GMAT.
  • Free GMAT Strategy Webinar

     February 16, 2019

     February 16, 2019

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

In triangle ABC, AB = 30. AC = 28. If the area of the triangle is 336,

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

Hide Tags

 
Intern
Intern
avatar
B
Joined: 29 Sep 2015
Posts: 3
GMAT ToolKit User
In triangle ABC, AB = 30. AC = 28. If the area of the triangle is 336,  [#permalink]

Show Tags

New post Updated on: 02 Oct 2018, 05:20
8
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

38% (02:06) correct 62% (02:58) wrong based on 30 sessions

HideShow timer Statistics

In triangle ABC, AB = 30. AC = 28. If the area of the triangle is 336, what is the perimeter of the triangle?

A. 58
B. 77
C. 82
D. 84
E. 92

Originally posted by arnavrayaca on 02 Oct 2018, 02:51.
Last edited by Bunuel on 02 Oct 2018, 05:20, edited 1 time in total.
Renamed the topic and edited the question.
Director
Director
User avatar
P
Status: Learning stage
Joined: 01 Oct 2017
Posts: 958
WE: Supply Chain Management (Energy and Utilities)
Premium Member
Re: In triangle ABC, AB = 30. AC = 28. If the area of the triangle is 336,  [#permalink]

Show Tags

New post 02 Oct 2018, 06:35
arnavrayaca wrote:
In triangle ABC, AB = 30. AC = 28. If the area of the triangle is 336, what is the perimeter of the triangle?

A. 58
B. 77
C. 82
D. 84
E. 92


Formula used:- Area of scalene triangle=\(\sqrt{s(s-a)(s-b)(s-c)}\)
Here, a=28, b=30, c=x(say)
\(s=\frac{a+b+c}{2}=29+\frac{x}{2}\)

So, \((29+\frac{x}{2})(29-\frac{x}{2})(\frac{x}{2}+1)(\frac{x}{2}-1)=336^2\)
Or, \(\left(29^2-\frac{x^2}{4}\right)\left(\frac{x^2}{4}-1\right)=336^2\)
Solving for x, we have x=26.

Hence perimeter=26+28+30=84

Ans. (D)
_________________

Regards,

PKN

Rise above the storm, you will find the sunshine

GMAT Club Bot
Re: In triangle ABC, AB = 30. AC = 28. If the area of the triangle is 336,   [#permalink] 02 Oct 2018, 06:35
Display posts from previous: Sort by

In triangle ABC, AB = 30. AC = 28. If the area of the triangle is 336,

  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®.