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# http://www.manhattangmat.com I am still working on this.

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Senior Manager
Joined: 05 May 2003
Posts: 427
Location: Aus
Followers: 2

Kudos [?]: 5 [0], given: 0

http://www.manhattangmat.com I am still working on this. [#permalink]  16 Feb 2004, 07:17
http://www.manhattangmat.com

I am still working on this. Will check back later.
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Director
Joined: 03 Jul 2003
Posts: 655
Followers: 2

Kudos [?]: 22 [0], given: 0

I've got D

Not sure, if my approach is correct!
Senior Manager
Joined: 11 Nov 2003
Posts: 355
Location: Illinois
Followers: 1

Kudos [?]: 0 [0], given: 0

The question: what is [(PI)R^2 - a] - [(pi)r^2 - a] = (pi)R^2 - (pi)r^2
= pi(R+r)(R-r) = ?

(a is the area of the overlapped portion)

Statement 1: R = r + 3k => R-r = 3k. We do not know the value of R+ r . So insuffecient.

Statement 2: will give the vale of R+r

Together: the answer would be 18(pi)

Senior Manager
Joined: 05 May 2003
Posts: 427
Location: Aus
Followers: 2

Kudos [?]: 5 [0], given: 0

gmatblast's method is easy to follow.
SVP
Joined: 30 Oct 2003
Posts: 1797
Location: NewJersey USA
Followers: 5

Kudos [?]: 41 [0], given: 0

Yeah got the same.
C should be it.
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