Get ready for Pi Day!

Originally posted by wolfgang59
Knowing that there is a constant ratio between radius and circumference
has been known for millennia. Egyptians, Indians, Chinese etc.

The approximation of 3 was used by many (in the bible?)

I think the reeks squeezed a circle between 2 polygons to get a good value.
Presumably that method could be used to get an increasingly accurate value
as the sides of the polygon increase?

yes ..the Greeks basically kept increasing the number of sides on a polygon to produce a circle, and used trig to calculate its perimeter, which eventually limited to a circle's circumference. Fiendishly clever.

A similar problem asks 'what is the largest area that you can 'fence off' with, say, 100m of rope. The answer is a circle

It's all just Pi in the sky......

Originally posted by Pianoman1
It's all just Pi in the sky......

says the Pi-anoman

Originally posted by Ponderable
says the Pi-anoman

+1

Originally posted by Ponderable
says the Pi-anoman

Haha. Lol🙂

@sonhouse "If PI were equal to two this sentence would not be possible."

Originally posted by Pianoman1 (OP)
3.14.15 9:26:53

Bump for Pianoman1 with ten days to go until "Pi Day!"

Originally posted by Grampy Bobby
Bump for Pianoman1 with ten days to go until "Pi Day!"

Christ, you are totally desperate to post , arent you??

Pi day in Yankee USA. Not over here

Originally posted by st dominics preview
Christ, you are totally desperate to post , arent you??

Pi day in Yankee USA. Not over here

@Pianoman1
Joined 09 May '08
Country: England.

Originally posted by Sicilian Sausage
December 25th? 🙄

Bogie ... one of my favourite actors!

Coincidently he once went to a Christmas Party.

Originally posted by Sicilian Sausage
December 25th? 🙄

😀😀😵

-m.

Originally posted by Sicilian Sausage
December 25th? 🙄

annie lennox of eurythmics

humphrey bogart (actor)

Originally posted by Pianoman1
3.14.15 9:26:53

That's Pi second.

Originally posted by sonhouse
That's Pi second.

Not in civilised countries which count their days the normal way, it isn't.

[3.11.15] Bump for Pianoman1