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23 Nov 2017, 23:30
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C
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:
85% (01:07) correct
15%
(01:39)
wrong
based on 66
sessions
History
Date
Time
Result
Not Attempted Yet
In the figure above, O is the center of the circle and arc SRT has length 2π. If the circumference of the circle is 12π, what is the value of x + y?
(A) 60
(B) 90
(C) 120
(D) 150
(E) cannot be determined from the information given
Attachment:
2017-11-23_2026_002.png [ 11.63 KiB | Viewed 6189 times ]
In the mentioned Question,
Provided that the circumference of the circle is 12π which means Radius is 6 and arc SRT has length 2π which means length is 2X3.14 = 6.28.
Since, two details provided are of no use for the question provided.
If the triangle mentioned is Right angle triangle then answer is 90.
Since no where it is mentioned as Right angle traingle answer must be cannot be determined from the information given which is E
Provided that the circumference of the circle is 12π which means Radius is 6 and arc SRT has length 2π which means length is 2X3.14 = 6.28.
Since, two details provided are of no use for the question provided.
If the triangle mentioned is Right angle triangle then answer is 90.
Since no where it is mentioned as Right angle traingle answer must be cannot be determined from the information given which is E
24 Nov 2017, 01:12
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Answer is C. 120 degrees.
From the arc length and the circumference we can easily deduce the relationship between the angle subtended by this arc. This comes out to be 60 degrees.
Hence the other two are 120 in total as the sum of interior angles is 180.
Hence C.
Sent from my iPhone using GMAT Club Forum
From the arc length and the circumference we can easily deduce the relationship between the angle subtended by this arc. This comes out to be 60 degrees.
Hence the other two are 120 in total as the sum of interior angles is 180.
Hence C.
Sent from my iPhone using GMAT Club Forum
