This video unfolds various mysteries of pi π Pi is an irrational constant but we were taught that the value of pi (π) is 22/7 or 3.14 which is wrong. Ramanujan gave many formulae to calculate the value of pi many scientists and mathematicians tried to calculate the value of pi but they failed. The circumference divided by the diameter of a circle is always π, no matter how large or small the circle is. Correct value of pi is is 3.14159265... The number π is a mathematical constant it is also referred to as Archimedes Constant. Pi, in mathematics, the ratio of the circumference of a circle to its diameter. The symbol π was devised by British mathematician William Jones in 1706 to represent the ratio and was later popularized by Swiss mathematician Leonhard Euler. Because pi is irrational (not equal to the ratio of any two whole numbers), its digits do not repeat, and an approximation such as 3.14 or 22/7 is often used for everyday calculations. To 39 decimal places, pi is 3.141592653589793238462643383279502884197.........The Babylonians (c. 2000 BCE) used 3.125 to approximate pi, a value they obtained by calculating the perimeter of a hexagon inscribed within a circle and assuming that the ratio of the hexagon’s perimeter to the circle’s circumference was 24/25. The Rhind papyrus (c. 1650 BCE) indicates that ancient Egyptians used a value of 256/81 or about 3.16045. Archimedes (c. 250 BCE) took a major step forward by devising a method to obtain pi to any desired accuracy, given enough patience. Have you ever heard about Pi day Pi day is celebrated on 14 March at 1:59 PM On this day Great Scientist Albert Einstein Was born and Sir Stephen Hawkings died on this day. #pi #π #whatispi #whypiis3.14 #secretsofpi #historyofpi #piinmaths #whypiisirrational #ramanujan #einstein #maths #mathematician #piis3.14 #πinhindi #whatisπ #piday #egypt #egyptians