Re: Problems finding out the area of a 0.5mm circle.
- From: David C. Ullrich <ullrich@xxxxxxxxxxxxxxxx>
- Date: Tue, 31 Jan 2006 10:30:22 -0600
On 31 Jan 2006 05:27:22 -0800, johnpeterson02@xxxxxxxxxxx wrote:
>Problems finding out the area of a 0.5mm circle.
>
>After doing the following equation 3.14 x 0.25 x 0.25, I get an area of
> 0.1963mm and I need the answer to be in nanometers thus I convert it,
>with the result being 196300 nano meters
>
>However when I try working out the same area (0.5 circle) using nano
>meters in the initial equation instead of mm (3.14 x 250,000 x 250,000)
>I get a bigger area of 196250000000 nano meters, which converts to
>196300mm!
>
>Why is the area of a 0.5mm circle bigger when I work out the area in
>nanometers rather than mm?
As far as I know this phenomenon is not very well understood.
But it's one of the reasons that nanotech is so hot these
days - at those tiny scales everything is so much bigger!
>I also need to know how many 100 nano meter circles I can fit into a
>500,000 nanometer (0.5mm) circle, and I assume I simply divide
>196250000000 by 100?
>
>Thanks for your help
************************
David C. Ullrich
.
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