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Coordinate Geometry..yet again! (GPREP)

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by zagcollins » Wed Jul 30, 2008 9:04 pm
pls check attached scrshot...OA is D
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by amitansu » Wed Jul 30, 2008 10:24 pm
Ans is 'E'.

All of them are having area of 2units.


Amit
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by Mani_mba » Wed Jul 30, 2008 11:05 pm
I go with Option 'D'.

OA pls ?
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by [email protected] » Thu Jul 31, 2008 12:48 am
I agree option D - S cannot have an area of 2 as base x height/2 would give you 3/2
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by vishubn » Thu Jul 31, 2008 12:54 am
I go with optiioon D as well !

the are of Q=2*1=2 untis

area 0f P =1/2 * 4*1=2 units

area of R is a squrar again = 2 units

Area of s = 1/2 * 3 *1=3/2

So i wpould go with option D

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by sudhir3127 » Thu Jul 31, 2008 1:11 am
My answer D as well..
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by parallel_chase » Thu Jul 31, 2008 1:23 am
I used the elimination technique just because I wasnt too sure about the R.

P will be 2 therefore eliminate A, B and C.

S cannot be 2. Eliminate E

Hence D.
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by tolmar » Thu Jul 31, 2008 1:31 am
The OA if I remember correctly is D.
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by raunekk » Thu Jul 31, 2008 3:54 am
D ...for me 2..
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by zagcollins » Thu Jul 31, 2008 4:27 am
can sum1 brk it down a lil more.....i really cudnt understand it...
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by malolakrupa » Sun Aug 03, 2008 6:59 pm
All the figures are in the x-y plane .

Area of triangle p = 1* 4/2 = 4/2 = 2. Hence P is a candidate

Area of Q = 2* 1 = 2

Area of R = (length of side)^ 2

To find the length of each side , we notice , that each side forms the hypotenuse of a right angle iscoceles triangle having sides 1 . Hence the length of the hypotenuse is sqrt(2) .

So the area of R = 2

Area of S = 3/2

Hence the answer D
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