Question

What is the proof that pi is 3.14?​

Answer 1

Explanation:

If we consider a circle with a diameter of 7 cm... by superimposing a thread we may find that the circumference is approx. 22 cm.

Now, as we know that

2 pi r = c

d * pi =c

pi = c/d

Hence by dividing 22 by 7, we get 3.14 to two decimal places

[Note: The exact value of pi can never be found... as it is irrational. But for simplicity.. we take it as 3.14]