Nick Taylor wrote:
> My sixth grade son did the math for me:
>
> 3.14 x (1/1.4) x (1/1.4) = 1.60
>
> 3.14 x (1/1.8) x (1/1.8) = 0.97
>
> (1.60/0.97) X 100 = 165%
>
> He also said that if we use pi to more than two decimal places, and
> use the square root of 2 instead of 1.4 we'll get more accurate results.
The marked fastest apertures are only approximate and rounded anyway.
And as a little tip, it doesn't really matter how many decimal places of
pi you use, it cancels out anyway. ;-) So, the most accurate procedure
would be to omit pi entirely.
Thomas Bantel
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