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# A certain circular area has its center point P and has a

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Manager
Joined: 17 Aug 2006
Posts: 86
A certain circular area has its center point P and has a [#permalink]

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13 Nov 2008, 05:44
A certain circular area has its center point P and has a radius 4, and points X and Y lie in the same planse as the circular area. Does point Y lie outside the circular area?

1) The distance between point P and point X is 4.5

2) The distance between point X and point Y is 9

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Manager
Joined: 05 Jul 2008
Posts: 132
GMAT 2: 740 Q51 V38
Re: prep 21 of 37 [#permalink]

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13 Nov 2008, 07:15
nfa1rhp wrote:
A certain circular area has its center point P and has a radius 4, and points X and Y lie in the same planse as the circular area. Does point Y lie outside the circular area?

1) The distance between point P and point X is 4.5

2) The distance between point X and point Y is 9

C.

If Y lie inside the circular erea, the distance between point X and Y must be less than 4.5+4= 8.5.
XY=9 while PX is 4.5=> Y lie outside the circle.
Current Student
Joined: 28 Dec 2004
Posts: 3288
Location: New York City
Schools: Wharton'11 HBS'12
Re: prep 21 of 37 [#permalink]

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13 Nov 2008, 07:21
i will say A..cause if x is 4.5 away from P..then it is outside of the radius ..

statement 2 in insuff cause x and y could still be on the y=4 and x=4 the distance is 4*sqrt(2) which is greater than 9..but we dont know where x and y are ..with respect to P
Manager
Joined: 05 Jul 2008
Posts: 132
GMAT 2: 740 Q51 V38
Re: prep 21 of 37 [#permalink]

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13 Nov 2008, 07:31
fresinha12 wrote:
i will say A..cause if x is 4.5 away from P..then it is outside of the radius ..

statement 2 in insuff cause x and y could still be on the y=4 and x=4 the distance is 4*sqrt(2) which is greater than 9..but we dont know where x and y are ..with respect to P

Sorry, maybe I misunderstand something.
But, what does "planse" mean?
A just shows us X lies outside of the circle!
Manager
Joined: 02 Nov 2008
Posts: 56
Re: prep 21 of 37 [#permalink]

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13 Nov 2008, 10:02
4*sqrt(2) < 9

I will go with C
Current Student
Joined: 28 Dec 2004
Posts: 3288
Location: New York City
Schools: Wharton'11 HBS'12
Re: prep 21 of 37 [#permalink]

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13 Nov 2008, 10:31
i missed the question was asking about y..you are correct

DavidArchuleta wrote:
fresinha12 wrote:
i will say A..cause if x is 4.5 away from P..then it is outside of the radius ..

statement 2 in insuff cause x and y could still be on the y=4 and x=4 the distance is 4*sqrt(2) which is greater than 9..but we dont know where x and y are ..with respect to P

Sorry, maybe I misunderstand something.
But, what does "planse" mean?
A just shows us X lies outside of the circle!
Manager
Joined: 23 Jul 2008
Posts: 181
Re: prep 21 of 37 [#permalink]

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13 Nov 2008, 11:17
Clearly either C or E is the answer
together 1 + 2 : assuming p as the centre PX will be 4.5. As diameter is the largest chord and XY is 9 the locus of point y will always be outside the given circle.
Hence C is the answer
Manager
Joined: 08 Aug 2008
Posts: 226
Re: prep 21 of 37 [#permalink]

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13 Nov 2008, 11:23
A.
any point from the center must be equidistant on the plane of the circle.
if pX=4.5>4..then definitely q is outside the circle.

(b)insufficient.
XY can either be a tangent or secant to the circle and still be on the circular plane.
Manager
Joined: 17 Aug 2006
Posts: 86
Re: prep 21 of 37 [#permalink]

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13 Nov 2008, 12:59
"in the same plane" and the answer is C.
Manager
Joined: 08 Aug 2008
Posts: 226
Re: prep 21 of 37 [#permalink]

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14 Nov 2008, 01:25
misread x for y
prasun84 wrote:
A.
any point from the center must be equidistant on the plane of the circle.
if pX=4.5>4..then definitely q is outside the circle.

(b)insufficient.
XY can either be a tangent or secant to the circle and still be on the circular plane.

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: prep 21 of 37   [#permalink] 14 Nov 2008, 01:25
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