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07 Sep 2018, 01:35
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
78% (01:08) correct
23%
(01:02)
wrong
based on 43
sessions
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Time
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Not Attempted Yet
What is the area of the shaded region, if one side of the isosceles triangle shown passes through the center?
(1) The radius of the circle is 1.
(2) Angle x is a right angle.
Attachment:
image013.jpg [ 4.03 KiB | Viewed 1385 times ]
Updated on: 07 Sep 2018, 04:06
Originally posted by GMATinsight on 07 Sep 2018, 02:41.
Last edited by GMATinsight on 07 Sep 2018, 04:06, edited 1 time in total.
Last edited by GMATinsight on 07 Sep 2018, 04:06, edited 1 time in total.
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Bunuel
Question: Shaded region = Semicircle - Area of triangle in semicircle = ?
Statement 1: The radius of the circle is 1.
Area of triangle can be calculated which is a right triangle (every angle at circumference in a semicircle is 90º) isosceles triangle with hypotenuse 2 hence
SUFFICIENT
Statement 2: Angle x is a right angle.
This statement is redundant as we already know by property of circles that (every angle at circumference in a semicircle is 90º)
NOT SUFFICIENT
Answer: option A
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07 Sep 2018, 03:06
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Bunuel
Can it be assumed that the vertex with the angle x is touching the circumference? if yes then the answer should be A
