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Topic: Calculate circumreference and area of circle without Pi is easy
Replies: 12   Last Post: May 9, 2013 12:49 AM

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Brian Q. Hutchings

Posts: 4,975
Registered: 12/6/04
the surfer's value of the ratio of the diameter to the area of sphere
Posted: May 7, 2013 6:09 PM
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pi is used "symbolically;"
one does not need to inset a particular value,
til one actually has to build the ****;
I generally use the surfer's value of pi,
when wind comes to wave.

> No i am not, Pi is an approximation my fraction

the moat important thing is that the area
of the great circle is a fourth of the whole surface.

if you investigate the edges-tangent-to-sphere duals
of hexahedra & octahedra, you'll see where three fourths is.



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