22/7 is the older fraction approximation.
355/113 is a newer fraction. Notice it uses easy to remember numbers 113355.
Neither one is exact because Pi is an irrational number. That means it can not be expressed as a fraction or a repeating decimal.
That depends on how precise you want the approximation.
pi is irrational so there can be no fraction that is equivalent. 22/7 is often used as a simple approximation.
As a fraction 0.111 = 111/1000
Think of pi as infinity. It never ends. You might mean "3.14" as an approximation of pi, though.
3.14 is the commonly used approximation
The approximation of Pi is 22/7 and the most used form is 3.1416 (rounded up). To 30 decimal places, pi is : 3.14159 26535 89793 23846 26433 83279
22/7=3.14286 Which is a fair approximation to Pi, but 355/113 =3.14159 and is a much better approximation.
That is an approximation of the number pi.
It is: 22/7
That's not a "mathematical principle", it is an approximation of the number pi.That's not a "mathematical principle", it is an approximation of the number pi.That's not a "mathematical principle", it is an approximation of the number pi.That's not a "mathematical principle", it is an approximation of the number pi.
Pi, although it is only an approximation
It is an approximation, yes.