pi (3.1416, etc) (or 22/7) is the fundemental constant (given or a priori) in the relationship between the area of a circle and its radius or diameter).
i.e. area of a circle =Pi X R squared.
Likewise the circumference is Pi X D where D is the diameter of the circle.
Chat with our AI personalities
4*pi*radius2 = area radius = square root of (area/4*pi) diameter = 2*radius volume = 4/3*pi*radius3
Given a sphere of radius r, Surface area = 4{pi}r2 Volume = (4/3){pi}r3
Pi is not a size. Pi is usually 22/7. Sometimes also 3,14. Pi is used to measure area and circumference of a circle, and the volume of sphere / tube. If there is no pi, then the area and circumference of circle, and the volume of sphere / tube will not be counted.
It is used to find the area of a circle as pi*radius2
Some of the many applications that pi is used in geometry are as follows:- Finding the area of a circle Finding the circumference of a circle Finding the volume of a sphere Finding the surface area of a sphere Finding the surface area and volume of a cylinder Finding the volume of a cone