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A wire is cut into two pieces

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Intern
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Joined: 08 Mar 2010
Posts: 20
Schools: Richard Ivey School of Business (University of Western Ontario)
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A wire is cut into two pieces [#permalink] New post 11 Apr 2010, 21:58
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  5% (low)

Question Stats:

50% (01:04) correct 50% (00:03) wrong based on 2 sessions
Q - A thin piece of wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and the square regions in terms of r?


A. πr(^2)
B. πr(^2) + 10
C. πr(^2) + [π(^2)r(^2)]/4
D. πr(^2) + (40 - 2πr)^2
E. πr(^2) + [10 - (πr)/2]^2
Senior Manager
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Joined: 01 Feb 2010
Posts: 268
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Kudos [?]: 34 [0], given: 2

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Re: A wire is cut into two pieces [#permalink] New post 12 Apr 2010, 00:24
ronny13 wrote:
Q - A thin piece of wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and the square regions in terms of r?


A. πr(^2)
B. πr(^2) + 10
C. πr(^2) + [π(^2)r(^2)]/4
D. πr(^2) + (40 - 2πr)^2
E. πr(^2) + [10 - (πr)/2]^2


Same as ps4gmat-prep-92499.html
Re: A wire is cut into two pieces   [#permalink] 12 Apr 2010, 00:24
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A wire is cut into two pieces

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