I agree to the Terms of Service
Pic

Multipurpose Modals

Pillar includes simple and intuitive markup making it easier than ever to create autoshow, trigger and cookies enabled modals.
Cool, I got it!
IMPORTANT: The site will be undergoing scheduled maintenance this Friday from 2-7pm, Pacific Standard Time
  • Varsity Tutors
    Award-winning private GMAT tutoring
    Register now and save up to $200

    Available with Beat the GMAT members only code

    MORE DETAILS
    Varsity Tutors
  • The Princeton Review
    FREE GMAT Exam
    Know how you'd score today for $0

    Available with Beat the GMAT members only code

    MORE DETAILS
    The Princeton Review
  • Target Test Prep
    5-Day Free Trial
    5-day free, full-access trial TTP Quant

    Available with Beat the GMAT members only code

    MORE DETAILS
    Target Test Prep
  • Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

    MORE DETAILS
    Magoosh
  • Economist Test Prep
    Free Trial & Practice Exam
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • PrepScholar GMAT
    5 Day FREE Trial
    Study Smarter, Not Harder

    Available with Beat the GMAT members only code

    MORE DETAILS
    PrepScholar GMAT
  • e-gmat Exclusive Offer
    Get 300+ Practice Questions
    25 Video lessons and 6 Webinars for FREE

    Available with Beat the GMAT members only code

    MORE DETAILS
    e-gmat Exclusive Offer
  • Kaplan Test Prep
    Free Practice Test & Review
    How would you score if you took the GMAT

    Available with Beat the GMAT members only code

    MORE DETAILS
    Kaplan Test Prep
  • EMPOWERgmat Slider
    1 Hour Free
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider
  • Veritas Prep
    Free Veritas GMAT Class
    Experience Lesson 1 Live Free

    Available with Beat the GMAT members only code

    MORE DETAILS
    Veritas Prep

Admissions Success Stories A bigger circle (with center A) and a smaller circle

This topic has 0 member replies
Post new topic Post reply
Add To My Collection
Pic

Previous Topic Next Topic

Top Member

AAPL Moderator Default Avatar
Joined
29 Oct 2017
Posted:
462 messages
Followed by:
2 members
Most Active Member Most Conversational Member

A bigger circle (with center A) and a smaller circle

Post Tue Aug 07, 2018 5:40 am

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Difficult


Source: e-GMAT



A bigger circle (with center A) and a smaller (circle with center B) are touching each other externally. PT and PS are tangents drawn to these circles from an external point (as shown in the figure). What is the length of ST?

(1) The radii of the bigger and the smaller circles are 9cm and 4cm respectively.
(2) PB = 52/5 cm.

The OA is A.

Is there a strategic approach to this question? Can anyone help? Thanks!

  • +1 Upvote Post
  • Quote
  • Flag

Top First Responders*
1 Jay@ManhattanReview 76 first replies
2 GMATGuruNY 61 first replies
3 Brent@GMATPrepNow 46 first replies
4 Rich.C@EMPOWERgma... 33 first replies
5 ceilidh.erickson 18 first replies
* Only counts replies to topics started in last 30 days
See More Top Beat The GMAT Members

Most Active Experts
1 image description Brent@GMATPrepNow

GMAT Prep Now Teacher

 107 posts
2 image description GMATGuruNY

The Princeton Review Teacher

 94 posts
3 image description Jeff@TargetTestPrep

Target Test Prep

 93 posts
4 image description Max@Math Revolution

Math Revolution

 91 posts
5 image description Jay@ManhattanReview

Manhattan Review

 88 posts
See More Top Beat The GMAT Experts