pi=355/113 http://www.pidayinternational.org/Pi_History/HISTORY_OF_PI_Ancient_China.htm
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pi is irrational so there can be no fraction that is equivalent. 22/7 is often used as a simple approximation.
3.14 is an approximation of the number pi. The number pi is also often approximated by the fraction 22/7.
22/7 * * * * * Since pi is a transcendental number, which is a kind of irrational number, there is no fractional form of pi. 22/7 is merely a fractional approximation.
3 1/7 is equal to 22/7 which is an approximation for pi.
No. It is a rough but rational approximation for the irrational number, pi...Which can expressed as a fraction 22/7.