Question

the ratio of cricrumfrence to the diameter of the circle c/d is represented by pai . but we say that pai is an irrational number . why?​

Answer 1

Pi is an irrational number, which means that it is a real number that cannot be expressed by a simple fraction. That's because pi is what mathematicians call an "infinite decimal" — after the decimal point, the digits go on forever and ever. ... (These rational expressions are only accurate to a couple of decimal places.)