what's the math pi
Pi ( Ï) is the ratio between the radius of a circle and its circumfrance. The value allows calculation of the area and circumfrance of a circle and the volume of a sphere. Pi is the number used to find the circumference or area of a circle. It is also used to calculate the surface area and volume of a sphere, cylinder, and cone. <br /> It can be shortened as 3.14 <br /> Numerically it is 3.1415 then a long string of numbers that never end as it is an irrational number.