East Journal on Approximations was created in 1995.

3.14 and 3.14159 are two commonly used decimal approximations.

In ratio form, 22/7 is often used.

Shaping

All irrational numbers are approximations. Thus PI and the decimal notation for one third (1/3) are both approximations. Note that the fraction 1/3 is not an approximation, it is precise, but it is not possible to notate precisely using decimal notation because it extends into infinity (0.3333333333...).

You do not have all the information and so your conclusions are based on approximations.