Pi is calculated by dividing the circumference of a circle by its diameter. This value is a constant and is approximately equal to 3.14.
The most accurate method for calculating pi is by using infinite series. One example is the Leibniz formula which uses an infinite sum to approximate the value of pi.
No, pi is an irrational number which means it cannot be represented as a finite decimal. Therefore, it cannot be calculated to an exact value.
As of 2020, the current record for calculating the most digits of pi is 50 trillion digits. However, for practical purposes, pi is usually rounded to 3.14 or a few more digits.
Reliable measurements are important when calculating pi because even a small error can greatly impact the accuracy of the value. This is especially crucial in fields such as engineering and physics where precise calculations are necessary for accurate results.