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# If a circle with center at the origin passes through the

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Eternal Intern
Joined: 07 Jun 2003
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If a circle with center at the origin passes through the [#permalink]

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08 Jul 2003, 20:35
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If a circle with center at the origin passes through the point ( 0,5)
through which of the following points does it also pass?

A) 2, sqrt 21

B) 4,5

C) 5, sqrt 21

D) ( 5, 5)

E) ( 5, 12)

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SVP
Joined: 03 Feb 2003
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08 Jul 2003, 22:49
The equation of the circle with its center on the origin is X^2+Y^2=R^2, where R is a radius, R=5

X^2+Y^2=25

let's check each option.

Ironically, only A matches.

Probably, there is a typo: (5, sqrt 21) should be (2, sqrt 21)

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Eternal Intern
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Update [#permalink]

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09 Jul 2003, 06:51
A) 2, sq rt 21

Sorry for typo. Nope, Stolyar your wrong.

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Eternal Intern
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Update [#permalink]

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09 Jul 2003, 06:56
A) 2, sq rt 21

Sorry for typo. Nope, Stolyar your wrong.

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Eternal Intern
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Stolyar [#permalink]

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09 Jul 2003, 07:48
A) 2, sq rt 21 is right answer not 0, 5?

Your a math expert, can you work out why 2, sq rt 21 is right?

Curly

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SVP
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Re: Remember This from Your GMAT One- Geometry 2- Draw a pic [#permalink]

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09 Jul 2003, 08:07
Curly05 wrote:
If a circle with center at the origin passes through the point ( 0,5)
through which of the following points does it also pass?

A) O,5

B) 4,5

C) 5, sqrt 21

D) ( 5, 5)

E) ( 5, 12)

Please draw an attachment so all of us can understand.

Of the given options only A matches

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Founder
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Re: Stolyar [#permalink]

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09 Jul 2003, 08:47
Curly05 wrote:
A) 2, sq rt 21 is right answer not 0, 5?

Your a math expert, can you work out why 2, sq rt 21 is right?

Curly

Curly, you are nuts. Stolyar got it

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Eternal Intern
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Response [#permalink]

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09 Jul 2003, 08:51
( 2, sq rt 21) is A. I made a typo.

Sorry everyone.

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Response   [#permalink] 09 Jul 2003, 08:51
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# If a circle with center at the origin passes through the

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