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An explanation of pi plz :)

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lol that's quite the thorough explanation tommy :)

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Other answers:

pi is used in finding rotations of circles and such, yes it is 3.141592..........
come on, ppl elaborate
where have you used pi before?
@KonradZuse Can you please answer my question to, when your done with this one?
examples? tag me tommy, don't intercept q's.
picking best answer...
One possible interpretation of pi is the ratio of the circumference to the diameter. If we took a string and placed it over the diameter and measured that length, and then wrapped it around the circumference and measured; we could take the quotient of the two in order to approximate this ratio. :) With more math: \(C = \pi d \to \frac{C}{d} = \pi \) by a division.
|dw:1359577257770:dw|This is how I like to interpret pi, it's a little silly though :) If you think of a big square, 2 by 2. Break it up into 1 by 1 squares as I have done. Soooo the big square has area of 4. You'll notice that the area of the circle is less than that of the squares, it ends up filling a little more than 3 of those squares. If you have a circle of Radius 1, (which is what the picture is showing), Then the area is pi.\[\large A=\pi r^2\qquad \rightarrow \qquad A=\pi \cdot 1^2\]Just something to think about :)
Pi is a constant. It's an irrational mathematical number and it is used in math to relate two different things together. As AccessDenied has said; it creates a relationship between the circumference of a circle (That's the outside peramiter) and the diametre (that's a straight line through the centre touching the circumference) When used in radians it represents 180 degrees. When used in degrees it represents 3.1415926535897931384626433.... It keeps going and is therefore irrational.

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