3. Recall, $$\pi$$ is defined as the ratio of the circumference (say c) of a circle to its diameter (say d).
That is, $$\pi$$ = c/d. This seems to contradict the fact that $$\pi$$ is irrational.
How will you resolve this contradiction?
First of all, there is not any contradiction. $$\pi$$ defined here has an approximate value of 22/7 i.e. by comparing with c/d.