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

GPREP1- Square in circle

Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 186
Joined: Sat Jan 26, 2008 10:05 pm
Thanked: 2 times
by medea66 » Mon Aug 18, 2008 7:27 pm
If area of circle = pi r squared, how do you get 8pi?
You do not have the required permissions to view the files attached to this post.
Top
Join the discussion
Source: — Problem Solving |
Legendary Member
Posts: 829
Joined: Mon Jul 07, 2008 10:09 pmFollowed by: 3 members
Location: INDIA
Thanked: 84 times

Re: GPREP1- Square in circle

by sudhir3127 » Mon Aug 18, 2008 8:55 pm
medea66 wrote:If area of circle = pi r squared, how do you get 8pi?
If a square is inscribed in a circle .. the diagonal of the square will be the diameter of the circle.

Area of the square = 16
hence S = 4

Diagonal of a square is sqrt 2* side

thus the diagonal is sqrt 2*4

hence the radius of ths circle is 1/2* (sqrt2*4)

thus Radius = sqrt2*2

Area of the circle is pi*r^2

therefore its pi* (2rt2)^2
= 8pi

hope it helps..
Top
Join the discussion
Master | Next Rank: 500 Posts
Posts: 186
Joined: Sat Jan 26, 2008 10:05 pm
Thanked: 2 times

by medea66 » Wed Aug 20, 2008 6:11 pm
I get it.
Top
Join the discussion