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Recall, π is defined as the ratio of the circumference (say c) of a circle to its diameter (say d). That is, π = c/d . This seems to contradict the fact that π is irrational. How will you resolve this contradiction ?
We often take 22/7 as an approximate value for π. So, π is an irrational number.
∴ π = 22/7 (approx), which is irrational.
c/d = 22/7 (approx), which is irrational.
∵ [π = c/d]
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