
Thinking back to high school you may remember being taught about pi and using it in maths classes to calculate perimeters and areas of circles. You may remember being told a good approximation of pi is 3.14
, or 22/7
. But you may also recall that pi is irrational (meaning, in maths, that it cannot be expressed exactly as a ratio of two integers; basically, writing it out, it goes on forever; there are even books you can buy listing pi to a million decimal places).…