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In the figure above, 0 is the center of the circle. If AB =

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In the figure above, 0 is the center of the circle. If AB = [#permalink] New post 01 Aug 2019, 10:49
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#GRepracticequestion In the figure above, 0 is the center of the circle.jpg
#GRepracticequestion In the figure above, 0 is the center of the circle.jpg [ 10.37 KiB | Viewed 690 times ]


In the figure above, 0 is the center of the circle. If AB = 10, what is the area of the circle?

(A) \(10\pi\)

(B) \(20\pi\)

(C) \(25\pi\)

(D) \(50\pi\)

(E) \(100\pi\)
[Reveal] Spoiler: OA

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Re: In the figure above, 0 is the center of the circle. If AB = [#permalink] New post 06 Aug 2019, 08:19
so the triangle AOB is equilateral
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Re: In the figure above, 0 is the center of the circle. If AB = [#permalink] New post 06 Sep 2019, 23:17
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Carcass wrote:
Attachment:
#GRepracticequestion In the figure above, 0 is the center of the circle.jpg


In the figure above, 0 is the center of the circle. If AB = 10, what is the area of the circle?

(A) \(10\pi\)

(B) \(20\pi\)

(C) \(25\pi\)

(D) \(50\pi\)

(E) \(100\pi\)

The triangle inscribed in the circle having 60 degress as one of its angles becomes an equilateral triangle. SO, each of its sides become 10 unites, implying that the radius becomes 10 units too.
Area of the triangle being Pie*r*r => Pie*10*10 = 100\pi
Hence Option E
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Re: In the figure above, 0 is the center of the circle. If AB = [#permalink] New post 06 Sep 2019, 23:18
mdishan95 wrote:
Carcass wrote:
Attachment:
#GRepracticequestion In the figure above, 0 is the center of the circle.jpg


In the figure above, 0 is the center of the circle. If AB = 10, what is the area of the circle?

(A) \(10\pi\)

(B) \(20\pi\)

(C) \(25\pi\)

(D) \(50\pi\)

(E) \(100\pi\)

The triangle inscribed in the circle having 60 degrees as one of its angles becomes an equilateral triangle. So, each of its sides become 10 units, implying that the radius becomes 10 units too.
Area of the triangle being Pie*r*r => Pi*10*10 = 100*Pi
Hence Option E
Re: In the figure above, 0 is the center of the circle. If AB =   [#permalink] 06 Sep 2019, 23:18
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In the figure above, 0 is the center of the circle. If AB =

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