Question

what are the uses of "π"

Answer 1

Pi (π), the 16th letter of the Greek alphabet, is used to represent the mostwidely known mathematical constant. By definition, pi is the ratio of the circumference of a circle to its diameter. In other words, pi equals the circumference divided by the diameter (π = c/d)

Answer 2

π value is 22/7. we use the pi to find the area of circumference & all round object .π is the 16( ) alphabet in the Greek language.