Diameter and volume
They are: circumference/diameter = pi and circumference/2*radius = pi
The circumference of a circle divided by its diameter is equal to pi.
Pi is a Greek letter and is used as a number in the form of a symbol. It can be used to find the area and circumference of a circle. If you mean how the number was found, you just measure the circumference of any circular object and divide that by its diameter (using very precise measurements).
The numerical value of pi is often found using a Taylor or Maclaurin series (Taylor series centered at 0).
It means that it is the result of dividing two quantities. In this case two measurements: the circumference of the circle divided by the diameter of the circle.
Since circumference is found by multiplying pi by the diameter of the circle, the diameter can by found using the inverse operation. diameter = circumference/pi
If you mean a circle, the circumference is diameter times pi. Pi is approximately 3.14. The area is pi times the radius squared. The radius can be found using the equation: A = pi(r2), so 6 = 3.14(r2) r = about 1.3824 The diameter can be found using the equation: r = 2d, so d = about 2.7647 The circumference can be found using the equation: C = pi(d), so C = 3.14(2.7647), so C is about 8.68
Using 3.14 as Pi the area of circle is: 907.46
pi/2 radians.
So far no one has found the end of pi. Many people round it to 3.14. Because pi does not have an end (that we know of) any answer using pi is only approximate.
Using 3.14 as Pi the area of circle is: 7539.14
The area of the circle: pi*15*15 = 225*pi square measurements