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If A is the center of the circle above, what is the area of the triang

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Math Expert
Joined: 02 Sep 2009
Posts: 53066
If A is the center of the circle above, what is the area of the triang  [#permalink]

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07 Sep 2018, 00:32
00:00

Difficulty:

25% (medium)

Question Stats:

74% (00:35) correct 26% (00:25) wrong based on 33 sessions

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If A is the center of the circle above, what is the area of the triangle shown in the figure?

(1) The triangle is an equilateral triangle.
(2) The radius of the circle is 1.

Attachment:

image006 (1).jpg [ 3.57 KiB | Viewed 407 times ]

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Joined: 10 Jan 2013
Posts: 171
Location: India
Concentration: General Management, Strategy
GMAT 1: 600 Q43 V30
GPA: 3.95
Re: If A is the center of the circle above, what is the area of the triang  [#permalink]

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07 Sep 2018, 02:08
Bunuel wrote:

If A is the center of the circle above, what is the area of the triangle shown in the figure?

(1) The triangle is an equilateral triangle.
(2) The radius of the circle is 1.

Attachment:
image006 (1).jpg

So since 1 angle is given as 60 degrees, the other sides are equal and so all three angles become 60

A. Not sufficient
B. Sufficient
Intern
Joined: 07 Sep 2018
Posts: 4
Re: If A is the center of the circle above, what is the area of the triang  [#permalink]

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07 Sep 2018, 05:53
1
Given triangle is an equilateral triangle because one of the angles is 60 degree. Two arms of the triangle are equal because they are radius and hence angles opposite to them are equal.
To find the area we need just the radius of the triangle.
1. Radius is not given. Therefore the answer is B,C or E.
2. The radius is given. So the statement is sufficient.

Re: If A is the center of the circle above, what is the area of the triang   [#permalink] 07 Sep 2018, 05:53
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