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In the figure attached, if PR is a line segment, what is the

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Director
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In the figure attached, if PR is a line segment, what is the [#permalink] New post 27 Aug 2008, 13:04
In the figure attached, if PR is a line segment, what is the sum of the lengths of the curved paths from P to Q and from Q to R ?

(1) XQ = QY = 5 centimeters.
(2) Every point on arc PQ is 5 centimeters from point X, and every point on arc QR is 5 centimeters from point Y.

I think this is a pretty easy question but for some reason OA is not matching.... Just wanna make sure that I am not doing any stupid mistake.


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Re: Geometery [#permalink] New post 27 Aug 2008, 13:28
rao_1857 wrote:
In the figure attached, if PR is a line segment, what is the sum of the lengths of the curved paths from P to Q and from Q to R ?

(1) XQ = QY = 5 centimeters.
(2) Every point on arc PQ is 5 centimeters from point X, and every point on arc QR is 5 centimeters from point Y.

I think this is a pretty easy question but for some reason OA is not matching.... Just wanna make sure that I am not doing any stupid mistake.


Attachment:
Doc2.doc


B.
from 1 we do not know that the figures are semi-cercles.
from 2, they are semi-cercicles.
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Re: Geometery [#permalink] New post 27 Aug 2008, 13:30
We are looking for the radius.

1. xq=xy=5 we do not know the distance from p-x y-r( insufficient)

2. since every point from y and x are 5 cms away we can find the circum( sufficent)

I have to go with, "B"
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Re: Geometery [#permalink] New post 27 Aug 2008, 15:14
GMAT TIGER wrote:
rao_1857 wrote:
In the figure attached, if PR is a line segment, what is the sum of the lengths of the curved paths from P to Q and from Q to R ?

(1) XQ = QY = 5 centimeters.
(2) Every point on arc PQ is 5 centimeters from point X, and every point on arc QR is 5 centimeters from point Y.

I think this is a pretty easy question but for some reason OA is not matching.... Just wanna make sure that I am not doing any stupid mistake.


Attachment:
Doc2.doc


B.
from 1 we do not know that the figures are semi-cercles.
from 2, they are semi-cercicles.


Good point .. thanks!
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Re: Geometery [#permalink] New post 27 Aug 2008, 17:12
rao_1857 wrote:
In the figure attached, if PR is a line segment, what is the sum of the lengths of the curved paths from P to Q and from Q to R ?

(1) XQ = QY = 5 centimeters.
(2) Every point on arc PQ is 5 centimeters from point X, and every point on arc QR is 5 centimeters from point Y.

I think this is a pretty easy question but for some reason OA is not matching.... Just wanna make sure that I am not doing any stupid mistake.


Attachment:
Doc2.doc


from 1: even if they are circles, it is not known that x and y are centers of those semi-circles.
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Re: Geometery   [#permalink] 27 Aug 2008, 17:12
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