BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Any Idea?

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 588
Joined: Sun Oct 16, 2011 9:42 amFollowed by: 9 members
Location: New Delhi, India
Thanked: 130 times
GMAT Score:720

by rijul007 » Tue Nov 01, 2011 10:11 am
hypotenuse = a
each side = a/root(2)

Perimeter of rt isosceles triangle = a + 2a/root(2) = a+a*root(2) = 16+16*root(2)


so hypotenuse = 16
Option B
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 489
Joined: Tue Jul 05, 2011 11:10 amFollowed by: 5 members
Thanked: 28 times

by gmatblood » Tue Nov 01, 2011 10:19 am
Is it 8ROOT2 ?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 608
Joined: Sun Jun 19, 2011 11:16 amFollowed by: 8 members
Thanked: 37 times

by saketk » Tue Nov 01, 2011 11:03 am
The easiest way is to plug the answer choices [ remember to start with smart choices ]


2a^2 = b^2 (b is the hypotenuse)

or, a = b/sqrt(2) = b*sqrt(2)/2 -- THIS IS OUR MAIN EXPRESSION.

By smart choices I mean -- look at the perimeter.. It has root2 in it. So start with choices where you don't have ROOT(2) because our expression above has already got one.

Put the choices and see whether the value satisfies this equation .. 2a+b = 16+16*sqrt(2).

this will take 45-60 secs.

hth

IMO [spoiler](16) [/spoiler] the correct answer.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 425
Joined: Wed Dec 08, 2010 9:00 amFollowed by: 7 members
Thanked: 56 times
GMAT Score:690

by LalaB » Wed Nov 02, 2011 1:06 am
2a^2=h^2
a=h/sqroot2

2*h/sqroot2+h=16+16*sqroot2

sqroot2*h+h=16+16*sqroot2
h*(sqroot2+1)=16(sqroot2+1)

h=16
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 416
Joined: Tue Aug 30, 2011 2:18 pmFollowed by: 9 members
Location: Delhi, India
Thanked: 13 times

by vaibhavgupta » Wed Nov 02, 2011 2:22 pm
fbgeoff wrote:Image
IMO D

WHTS the OA?
If OA is A, IMO B
If OA is B, IMO C
If OA is C, IMO D
If OA is D, IMO E
If OA is E, IMO A

FML!! :/
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Community Manager
Posts: 1060
Joined: Fri May 13, 2011 6:46 amFollowed by: 52 members
Location: Utrecht, The Netherlands
Thanked: 318 times

by neelgandham » Wed Nov 02, 2011 2:39 pm
Let the length of the perpendicular sides be a, Hypotenuse = a*Square root(2) = ?

16 + 16*(Square root(2)) = a+a+(a*Square root(2))

16*(1+(Square root(2)) = a*Square root(2)* (1+(Square root(2))

16 = a*Square root(2) = Hypotenuse !

IMO : B

vaibhavgupta - I reckon you calculated the side, and not the Hypotenuse
Anil Gandham
Welcome to BEATtheGMAT | Photography | Getting Started | BTG Community rules | MBA Watch
Check out GMAT Prep Now's online course at https://www.gmatprepnow.com/
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Junior | Next Rank: 30 Posts
Posts: 14
Joined: Tue Jun 14, 2011 10:23 am

by fbgeoff » Wed Nov 02, 2011 7:33 pm
Correct answer according to the GMATPrep is B
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 416
Joined: Tue Aug 30, 2011 2:18 pmFollowed by: 9 members
Location: Delhi, India
Thanked: 13 times

by vaibhavgupta » Thu Nov 03, 2011 1:28 am
neelgandham wrote:Let the length of the perpendicular sides be a, Hypotenuse = a*Square root(2) = ?

16 + 16*(Square root(2)) = a+a+(a*Square root(2))

16*(1+(Square root(2)) = a*Square root(2)* (1+(Square root(2))

16 = a*Square root(2) = Hypotenuse !

IMO : B

vaibhavgupta - I reckon you calculated the side, and not the Hypotenuse
:?

Hmm.. will keep this in mind, thanks :)
If OA is A, IMO B
If OA is B, IMO C
If OA is C, IMO D
If OA is D, IMO E
If OA is E, IMO A

FML!! :/
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1