In the decimal system, circumference / diameter = 3.14159265359...
But, for example, in binary, that ratio is 11.00100100001111110111... Or in hexadecimal, 3.243F6A8885A308D313198A2E037073...
We also obtain an irrational number, independent of the numeric system that we use.
Has something to do with the fact that we use decimal system, or with the dimensions of the given space? Could it be otherwise, with another set of rules or number of spatial dimensions? (Obtain an exact number)