- How many circles of radius r can be arranged around a circle of radius r so that all the circles can touch the central circle?

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could you kindly elaborate on "outer circle diameter will lie on this circumference, n . 2 . r < 4 . pi . r" ?--- On

**Wed, 17/6/09, Haneef Mohammad**wrote:*<haneef0786@...>*

From: Haneef Mohammad <haneef0786@...>

Subject: Re: [2IIM CAT Prep] pls help me with this problem

To: ascent4cat@yahoogroups.com

Date: Wednesday, 17 June, 2009, 6:03 AMcircumference outer circles can cover = 2 pi (2r) (twice radius) = 4 . pi. r

outer circle diameter will lie on this circumference, n . 2 . r < 4 . pi . r

n < 2 . pi

n <= 6

- Haneef.

On Thu, May 28, 2009 at 7:37 PM, sharada sahoo <rockingpinku@ yahoo.co. in> wrote:How many circles of radius r can be arranged around a circle of radius r so that all the circles can touch the central circle?

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