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In a X-Y coordinate, two points on a circle are (4, 0) and

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In a X-Y coordinate, two points on a circle are (4, 0) and [#permalink]

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New post 30 Nov 2005, 22:59
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In a X-Y coordinate, two points on a circle are (4, 0) and (-4, 0).
What is the maximum radius of this circle?

(Answer choices not available for this question)
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Last edited by gamjatang on 01 Dec 2005, 00:07, edited 1 time in total.
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Re: PS - (AG) Radius of a circle [#permalink]

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New post 30 Nov 2005, 23:15
gamjatang wrote:
In a X-Y coordinate, two points on a circle are (4, 0) and (-4, 0).
What is the maximum radius of this circle?

(Answer choices not available for this question)


minimum or maximum??!
since the two points lie on the circle , the circle's centre must lie on the median ( hik, dunno correct name..i mean the line which is perpendicular to the line formed by the two points, so called line l, at the middle point of line l ) ...This centre can move infinitely along the the perpendicular line ....i doubt if the question asks for minimum radius.
Director
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Re: PS - (AG) Radius of a circle [#permalink]

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New post 30 Nov 2005, 23:18
laxieqv wrote:
gamjatang wrote:
In a X-Y coordinate, two points on a circle are (4, 0) and (-4, 0).
What is the maximum radius of this circle?

(Answer choices not available for this question)


minimum or maximum??!
since the two points lie on the circle , the circle's centre must lie on the median ( hik, dunno correct name..i mean the line which is perpendicular to the line formed by the two points, so called line l, at the middle point of line l ) ...This centre can move infinitely along the the perpendicular line ....i doubt if the question asks for minimum radius.


True, true.

The answer is (E) Infinite.

:-D
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 [#permalink]

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New post 01 Dec 2005, 00:05
diameter is the largest cord.

so maximum readious can be upto infinity. but minimum radious is 4.
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  [#permalink] 01 Dec 2005, 00:05
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In a X-Y coordinate, two points on a circle are (4, 0) and

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