Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 563 reviewsTarget Test Prep

Geometry GMAT Prep question- Experts plz confirm ans.

Problem Solving — algebra and arithmetic
Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 47
Joined: Tue Sep 20, 2011 2:34 pmFollowed by: 1 member
Thanked: 1 times
by anks17 » Thu Aug 09, 2012 7:52 pm
GMAT Experts,

Shouldn't the answer for attached question be pi*S(2R + S)? Can you please confirm the same.Thanks.
You do not have the required permissions to view the files attached to this post.
"doesn't matter ver u r...ur destiny depends upon vho u choose 2 b!!!!"
Top
Join the discussion
Source: — Quantitative Reasoning |
User avatar
Legendary Member
Posts: 520
Joined: Sat Apr 28, 2012 9:12 pmFollowed by: 49 members
Thanked: 339 times
GMAT Score:770

by eagleeye » Thu Aug 09, 2012 8:05 pm
anks17 wrote:GMAT Experts,

Shouldn't the answer for attached question be pi*S(2R + S)? Can you please confirm the same.Thanks.
Radius of medallion = r
Radius of glass interior = r-s

Area = pi * (r^2 -(r-s)^2) = pi * ( (r+r-s)(r-r+s)) = pi * (2r-s)(s) . ( using a^2-b^2 = (a+b)(a-b) )

E is correct.
Top
Join the discussion
Senior | Next Rank: 100 Posts
Posts: 47
Joined: Tue Sep 20, 2011 2:34 pmFollowed by: 1 member
Thanked: 1 times

by anks17 » Thu Aug 09, 2012 8:13 pm
I solved as below. What is wrong ?

Radius of Outer circle = R+S and Radious of Inner Circle = R
(as per diagram and question)

Area of Outer Circle = Pi * (R+S)^2
Area of Inner Circle - Pi * R^2
Area of Shaded Portion or Metal Frame = Pi [(R+S)^2 - (R^2)]= Pi(S^2 + 2S)
"doesn't matter ver u r...ur destiny depends upon vho u choose 2 b!!!!"
Top
Join the discussion
Senior | Next Rank: 100 Posts
Posts: 47
Joined: Tue Sep 20, 2011 2:34 pmFollowed by: 1 member
Thanked: 1 times

by anks17 » Thu Aug 09, 2012 8:17 pm
Eagleeye, got it, It seems R is radius of Outer Circle and I thought that it is radius of inner circle and hence a different answer, Thanks for your quick replies
"doesn't matter ver u r...ur destiny depends upon vho u choose 2 b!!!!"
Top
Join the discussion