Today i prepare a file in PDF format for print in Din-A4 paper.

Are the plans for make a 2500mm parabola dish mold.
Simple: only print and create the real mold.

You can download from: https://mega.nz/#!qENgwaIT!Amj9oIs-fx1vXZwPidLgwKwZKCf496Heeidxi0HlZ7I
Click on the "download from browser" button.

Regards.

Hi.

Geometry:

Comparing this value with the circumference of the paraboloid;
2[PIE]r
= 2*[PIE]*125,
= 250*[PIE],
= 785.7142,
= 785.71cm. QED.

Im thinking in what PIE number your'e using?.... from Archimedes directly? jejeje.

If you divide 785.7142 / 250 = 3.1428568 <<-- ¿this is your PI number?

If i use the normalized PI number 3.141592 etc....

D*[PI]= 785.40cm.

This is a very insteresting thread.

Thanks for share.