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01 Feb 2018, 23:41
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
87% (00:41) correct
13%
(00:45)
wrong
based on 52
sessions
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In the figure above, what is the perimeter of triangle QRS?
(A) 12
(B) \(6\sqrt{2}\)
(C) 6
(D) \(3\sqrt{2}\)
(E) \(2\sqrt{2}\)
Attachment:
2018-02-02_1040.png [ 7.36 KiB | Viewed 2447 times ]
01 Feb 2018, 23:45
Kudos
Bookmarks
Bunuel
Ans B
QP = PR =2
QR = 2√2 apply pythogoras theorem
QRS is equilateral triangle so perimeter = 3x 2√2 = 6√2
01 Feb 2018, 23:48
Kudos
Bookmarks
B
The triangle PQR is a right 45-90-45 triangle. Hence the length of QR is 2√2.
Also triangle QRS is an equilateral triangle of side 2√2.
Hence perimeter = 3* 2√2 = 6√2.
The triangle PQR is a right 45-90-45 triangle. Hence the length of QR is 2√2.
Also triangle QRS is an equilateral triangle of side 2√2.
Hence perimeter = 3* 2√2 = 6√2.
