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AbdurRakib
Joined: 11 May 2014
Last visit: 11 Sep 2026
Posts: 464
Status:I don't stop when I'm Tired,I stop when I'm done
Location: Bangladesh
Concentration: Finance, Leadership
Schools: Wharton '20 Yale '20 Tepper '20
GPA: 2.81
WE:Business Development (Real Estate)
Schools: Wharton '20 Yale '20 Tepper '20
Posts: 464
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
61% (01:17) correct
39%
(01:20)
wrong
based on 174
sessions
History
Date
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What is the area of square ABCD, as shown in the coordinate plane above?
(1) Point A has coordinates (0,4).
(2) Points B and D have coordinates (4,8) and (4,0), respectively.
Attachment:
2018-11-03_1313.png [ 37.4 KiB | Viewed 5542 times ]
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
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AbdurRakib
(1) coordinates of D is unknown..
insuff....
(2) BD=8=hypotenuse of isosceles triangle
sq.root2*a=8
a=4*sq.root2
area =32sq.mts
suff..
Ans B
Posts: 386
Statement 1 gives us the co-ordinate of point A
but we need co-ordinate of any other 3 points(B,C and D) so that we may get length of a side or diagonal from which we can calculate the area of square easily so insufficient
Statement 2 gives the co-ordinates of endpoints of diagonal BD using them we can find the diagonal length and thus the area of the square so sufficient
Correct Answer - B
+1 kudos if you like the solution
but we need co-ordinate of any other 3 points(B,C and D) so that we may get length of a side or diagonal from which we can calculate the area of square easily so insufficient
Statement 2 gives the co-ordinates of endpoints of diagonal BD using them we can find the diagonal length and thus the area of the square so sufficient
Correct Answer - B
+1 kudos if you like the solution
Urgent Help!!!
A) It's given A(0,4) , it means that distance from origin to point A is 4 and A is half the distance from B , So A =4 and B from origin will b 8 , So diagonal = 8
8 = a * root(2)
a = 4*root(2)
and we an evaluate the area...isn't it ?????????????
A) It's given A(0,4) , it means that distance from origin to point A is 4 and A is half the distance from B , So A =4 and B from origin will b 8 , So diagonal = 8
8 = a * root(2)
a = 4*root(2)
and we an evaluate the area...isn't it ?????????????
rocko911
Hi rocko911
Let the origin be point o
then the other two angles of right triangle ADO may be anything , which changes the value of side (hyp. of triangle) of square with angles
so u cannot deduce the diagonal to be 8 ..
for more visual clarity , refer below fig attached
hope u understand
Attachments
Untitled.png [ 4.84 KiB | Viewed 6084 times ]
rohit8865
In GMAT guidelines they say that pic is presented with the actual proportions, meaning that if you see square on the pic, you can be sure that sides of the figure have the same length, or like in our case, if you see equal lines on the linear plane they should be equal as well as angles. Please correct me if I'm wrong.
StaicyT
GMAT gives u enough info for deducing about given fig.
in above ques it was clearly stated that fig is sq. , if not so then the fig may be rectangle.
hope this answers your querry....
AbdurRakib
Dear Moderator,
Please check this question, the image of the same is not visible. Thank you.
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- Stne
stne
Fixed that. Thank you for noticing.
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Posts: 27
chetan2u , sir need your help here
if suppose the point of intersection of diagonals AC and BD is P , so in a square DP = BP and that is BD/2 and BD=side *sqrt(2) so , if the origin is O can't we say OA=DP and hence evaluate side and area
thanks in advance
if suppose the point of intersection of diagonals AC and BD is P , so in a square DP = BP and that is BD/2 and BD=side *sqrt(2) so , if the origin is O can't we say OA=DP and hence evaluate side and area
thanks in advance
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