Write about pi(π). – InterviewSolution

1.	Write about pi(π).
Answer» π is a Greek letter. It is a ratio of the circumference to diameter of a circle. Many mathematicians have given many values for this ratio. In the chapter Real numbers, we saw that ' π ' is an irrational number. Aryabhatta gave the value of π as 62832/20000 approximately, whereas Ramanujan found the value of π correct to a million places of decimals. However, for practical purposes, we use π as 22/7. But 22/7 is a rational number. It is only an approximate value.

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