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

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

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30 Nov 2005, 21:59
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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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Auge um Auge, Zahn um Zahn !

Last edited by gamjatang on 30 Nov 2005, 23:07, edited 1 time in total.

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30 Nov 2005, 22:15
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.

Kudos [?]: 395 [0], given: 0

Director
Joined: 14 Sep 2005
Posts: 984

Kudos [?]: 227 [0], given: 0

Location: South Korea

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30 Nov 2005, 22:18
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.

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Auge um Auge, Zahn um Zahn !

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30 Nov 2005, 23:05
diameter is the largest cord.

so maximum readious can be upto infinity. but minimum radious is 4.
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hey ya......

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30 Nov 2005, 23:05
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