I have learned about pi:

1. What is Pi?

I knew that, pi is the ratio of the circumference of a circle to its diameter. Pi is always the same number, no matter which circle you use to compute it.

2. How do we calculate the value of pi?

I knew that, how to calculate the value of Pi: Pi is the ratio of a circle's circumference to its diameter, such that Pi = c/d, where c is the circumference and d is the diameter. There are many methods for calculating Pi; some of them have been known since antiquity, while others have been discovered relatively recently.



Calculate Pi with the method used by Archimedes.



Use the method discovered by Madhava of Sangamagrama in the 15th century.



Examine the solution for Pi found by Leonhard Euler in 1735.



The formula Pi = 176 tan^--1(1/57) + 28 tan^--1(239) - 48tan^--1(682) + 96 tan^--1(12943) ... was used in 2002 to calculate Pi to 1,241,100,000,000 digits.
Pi = 22/7 or Pi=3.14

3. What is the history behind Pi?

I knew that, the history of Pi : Pi has been known for almost 4000 years, The ancient Babylonians calculated the area of a circle by taking 3 times the square of its radius, which gave a value of pi = 3. One Babylonian tablet (ca. 1900–1680 BC) indicates a value of 3.125 for pi, which is a closer approximation.
In the Egyptian Rhind Papyrus (ca.1650 BC), there is evidence that the Egyptians calculated the area of a circle by a formula that gave the approximate value of 3.1605 for pi.

4. Why is Pi an important value in every day life?

I knew that, why is Pi an important value in our life: Pi is important especially in anything such as graphing or construction because it is needed to make a circle every day. Pi is perhaps the most important mathematical constant. It appears in various formulas throughout math and science in fields as diverse as physics, statistics, and sociology.