Pi
C = 2*radius*pi
pi = circumference divided by diameter
Because area of any circle = pi*radius2
This is simply 3.14, or pi.
it has anything to do with circles
The cicumference of any circle divided by its diameter is aways equal to pi.
The Greek letter Pi (Ï€) is the equivalent to the English/Latin letter P
One definition of pi is the ratio of the circumference, C, of a circle to its diameter.,d. pi=C/d The area of a circle is (pi)r2 or (pi)d2/4 where r is the radius.
It's a number - used in problems involving geometry.
The number pi is the ratio of the circumference and the diameter of a circle. In Euclidian ("flat") geometry, this ratio is the same for all circles. The number pi is approximately 3.1416. It also has many other uses in mathematics and physics, not all of which have an obvious relation to a circle or sphere.
In math and science, Greek alphabet letters are used in formulas to represent various constants and variables. The Greek letter pi is used to represent the ratio of the circumference of a circle to its diameter.