hi, dependence of pi to dependence of diameter of square to diagonal

• Jul 9th 2013, 06:44 AM
razera
hi, dependence of pi to dependence of diameter of square to diagonal
dependence beetwen diameter of square is ( 4 * d / sqrt(2) ) / 2 = 4 / sqrt(2) = 2,83
compare to dependence of circle based on the same ray like square above is 2,83 to 3,14 its 0,90
• Jul 9th 2013, 08:04 AM
ebaines
Re: hi, dependence of pi to dependence of diameter of square to diagonal
razera - you've posted on this same subject before. Yes, the ratio of a square's perimeter to it's diagonal is 4/sqrt(2) = 2.83. And yes, this is different than the value for pi:

$\displaystyle \frac {4/\sqrt{2}}{\pi} = \frac {2.8284...}{3.1416...} = 0.9003...$

But do you have a specific question?
• Jul 9th 2013, 08:16 AM
HallsofIvy
Re: hi, dependence of pi to dependence of diameter of square to diagonal
By the way- you are also consistently using the word "ray" incorrectly. A "ray" is a line that has a specific "starting" point but then goes on infinitely. It is sometimes referred to as a half line. I suspect you mean "radius" of the circle.
• Jul 9th 2013, 08:31 AM
razera
Re: hi, dependence of pi to dependence of diameter of square to diagonal
correction :
dependence beetwen diameter of square is ( 4 * d / sqrt(2) ) / d = 4 / sqrt(2) = 2,83
compare to dependence of circle based on the same ray like square above is 2,83 to 3,14 its 0,90
• Jul 9th 2013, 10:37 AM
ebaines
Re: hi, dependence of pi to dependence of diameter of square to diagonal
I think the OP is using the term "ray" to mean the diagonal of the square and the diameter of the circle:

Attachment 28769
• Jul 9th 2013, 11:36 AM
HallsofIvy
Re: hi, dependence of pi to dependence of diameter of square to diagonal
Quote:

Originally Posted by razera
correction :
dependence beetwen diameter of square is ( 4 * d / sqrt(2) ) / d = 4 / sqrt(2) = 2,83
compare to dependence of circle based on the same ray like square above is 2,83 to 3,14 its 0,90

Yes, that's true. But what is your point in posting this?