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Math Forum » Discussions » Math Topics » geometry.puzzles

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Topic: The diameter of a chips box
Replies: 2   Last Post: Jan 30, 2013 4:38 PM

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Avni Pllana

Posts: 546
Registered: 12/6/04
Re: The diameter of a chips box
Posted: Jan 30, 2013 4:38 PM
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> (Assuming the chip-box is circular)
>
> The circumference is 2.
> Circumference = 2 * pi * radius, so
> 2 = 2 * pi * radius, so
> radius = 1/pi
> therefore the diameter = 2* radius = 2/pi

Hi Cadman,

your assumption that the chip-box i circular is not correct.
It is very easy to construct it from a sheet of paper, and see that the chip-box is not circular, it is even not elliptic.
The solution is simple, but not quite straightforward.

Best regards,
Avni

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