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The purpose of the proof is not primarily to convince its readers that 22 / 7 (or 3 + 1 / 7 ) is indeed bigger than π; systematic methods of computing the value of π exist. If one knows that π is approximately 3.14159, then it trivially follows that π < 22 / 7 , which is approximately 3.142857.
The number 22 ⁄ 7 as an approximation of ... 22/7 (group), a Japanese idol group 22/7, Japanese anime series based on the idol group; See also Pi; 2011 ...
The first few convergents (3, 22/7, 333/106, 355/113, ...) are among the best-known and most widely used historical approximations of π. Sequences of constants [ edit ]
The next rational number (ordered by size of denominator) that is a better rational approximation of π is 52 163 / 16 604 , though it is still only correct to six decimal places. To be accurate to seven decimal places, one needs to go as far as 86 953 / 27 678 .
223 ⁄ 71 < π < 22 ⁄ 7: 3.140845... < π < 3.142857... 2: 15 BC: Vitruvius [7] 25 ⁄ 8: 3.125: 1 Between 1 BC and AD 5: Liu Xin [7] [11] [12] Unknown method giving a figure for a jialiang which implies a value for π ≈ 162 ⁄ (√ 50 +0.095) 2. 3.1547... 1 AD 130: Zhang Heng (Book of the Later Han) [2] √ 10 = 3.162277... 736 ⁄ 232: ...
6/21 - 7/22. leo. 7/23 - 8/22. virgo. 8/23 - 9/22. libra. 9/23 - 10/22. scorpio. 10/23 - 11/21. sagittarius. 11/22 - 12/21. capricorn. 12/22 - 1/19. aquarius. 1/20 - 2/18. pisces. 2/19 - 3/20 ...
The number π (/ p aɪ /; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter.It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.
6/21 - 7/22. leo. 7/23 - 8/22. virgo. 8/23 - 9/22. libra. 9/23 - 10/22. scorpio. 10/23 - 11/21. sagittarius. 11/22 - 12/21. capricorn. 12/22 - 1/19. aquarius. 1/20 - 2/18. pisces. 2/19 - 3/20 ...