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GRE Math Challenge #45- O is the center of the circle
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28 Apr 2015, 12:15
28 Apr 2015, 12:15
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Question Stats:
66% (00:58) correct
33% (00:20) wrong based on 3 sessions
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O is the center of the circle and the perimeter of AOB is 6.
Quantity A: The circumference of the Circle.
Quantity B: 12
• Quantity A is greater.
• Quantity B is greater.
• Both Quantities are Equal
• Cannot be determined
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Re: GRE Math Challenge #45- O is the center of the circle
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11 Mar 2018, 06:40
11 Mar 2018, 06:40
sandy wrote:
O is the center of the circle and the perimeter of AOB is 6.
Quantity A: The circumference of the Circle.
Quantity B: 12
• Quantity A is greater.
• Quantity B is greater.
• Both Quantities are Equal
• Cannot be determined
In this problem, we can know that OA and OB are both the radius of the circle, and <AOB=60。
then can know triangle is equilateral triangle. Since its perimeter is 6, then we can know that the length of OA and OB would be 2.
then the circumference of the circle is 12pi which is bigger then 12.
Thus A>B
gmatclubot
Re: GRE Math Challenge #45- O is the center of the circle [#permalink]
11 Mar 2018, 06:40
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