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D
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Difficulty:
5%
(low)
Question Stats:
90% (00:39) correct
10%
(00:56)
wrong
based on 90
sessions
History
Date
Time
Result
Not Attempted Yet
In a square, the length of a side is s and the diagonal is d. What is the perimeter of the square?
(1) The area is 25 cm2.
(2) The diagonal is \(5\sqrt{2}\) cm.
(1) The area is 25 cm2.
(2) The diagonal is \(5\sqrt{2}\) cm.
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
21 Apr 2017, 06:33
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Bunuel
Given - Side = S,Diagonal=d.
Perimeter = 4S -->to be found
1) Area = s^2 = 25
Hence , S=5. Therefore Perimeter 4S=4*5.
2) Diagonal = \(10\sqrt{2}\) in.
Here X=90 degree and y=z=45 degree.
Using pythagoras theorem of 90:45:45 -> x√2 : x: x
We can find the side and solve for Permieter.
So - D
Sorry for the poor diagram
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Sirakri
GMAT 2: 700 Q48 V38
Posts: 104
21 Apr 2017, 23:02
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Bunuel
Area of a square = \(side^2\)
Diagonal of a square = \(\sqrt{2}*side\)
Perimeter of a square = 4*side
1) Area = 25cm2 => side = 5cm => Perimeter = 20cm => SUFFICIENT
2) Diagonal = \(10\sqrt{2}\) in. => Side = 10in. => Perimiter = 40in.
IMO D. But answers don't match..
