The mathematical constant pi (π) is defined as the ratio of a circle’s circumference to its diameter. To obtain the value of pi, you can divide the circumference of a circle by its diameter.
For example, if you take a circle with a circumference of 31.4 units and a diameter of 10 units, dividing the circumference by the diameter will yield:
31.4 ÷ 10 = 3.14
This result is an approximation of pi, which is an irrational number. It means that pi cannot be expressed as an exact fraction and its decimal representation goes on forever without repeating. The most common approximations used are 3.14 or 22/7.
Thus, to get pi, you need to perform the division of the circumference of the circle by its diameter, and this will give you a value that approaches the true value of pi.