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Founder  Joined: 18 Apr 2015
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In the figure above, 0 is the center of the circle. If AB = [#permalink]
Expert's post 00:00

Question Stats: 77% (00:52) correct 22% (00:15) wrong based on 9 sessions
Attachment: #GRepracticequestion In the figure above, 0 is the center of the circle.jpg [ 10.37 KiB | Viewed 355 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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Intern Joined: 31 Jul 2019
Posts: 13
Followers: 0

Kudos [?]: 2 , given: 2

Re: In the figure above, 0 is the center of the circle. If AB = [#permalink]
so the triangle AOB is equilateral
Intern Joined: 23 Mar 2019
Posts: 27
Location: India
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Kudos [?]: 16 , given: 1

Re: In the figure above, 0 is the center of the circle. If AB = [#permalink]
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
Intern Joined: 23 Mar 2019
Posts: 27
Location: India
Followers: 0

Kudos [?]: 16 , given: 1

Re: In the figure above, 0 is the center of the circle. If AB = [#permalink]
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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