Archimedes of Syracuse discovered, by considering the perimeters of 96-sided polygons inscribing a circle and inscribed by it, that π is between 223⁄71 and 22⁄7. The average of these two values is roughly 3.1419.
The Chinese mathematician Liu Hui computed π to 3.141014 (good to three decimal places) in AD 263 and suggested that 3.14 was a good approximation.
2006-10-27 22:07:52
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answer #1
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answered by Anonymous
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Who Discovered Pi
2016-09-28 06:15:15
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answer #2
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answered by Anonymous
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The mathematical constant π is an irrational real number, approximately equal to 3.14159, which is the ratio of a circle's circumference to its diameter in Euclidean geometry, and has many uses in mathematics, physics, and engineering. It is also known as Archimedes' constant (not to be confused with an Archimedes number) and as Ludolph's number.
The value of π has been known in some form since antiquity. As early as the 19th century BC, Babylonian mathematicians were using π = 25⁄8, which is within 0.5% of the true value.
The Egyptian scribe Ahmes wrote the oldest known text to give an approximate value for π, citing a Middle Kingdom papyrus, corresponding to a value of 256 divided by 81 or 3.160.
It is sometimes claimed that the Bible states that π = 3, based on a passage in 1 Kings 7:23 giving measurements for a round basin as having a 10 cubit diameter and a 30 cubit circumference. Rabbi Nehemiah explained this by the diameter being from outside to outside while the circumference was the inner brim; but it may suffice that the measurements are given in round numbers. Also, the basin may not have been exactly circular.Archimedes of Syracuse discovered, by considering the perimeters of 96-sided polygons inscribing a circle and inscribed by it, that π is between 223⁄71 and 22⁄7. The average of these two values is roughly 3.1419.
The Chinese mathematician Liu Hui computed π to 3.141014 (good to three decimal places) in AD 263 and suggested that 3.14 was a good approximation.
2006-10-27 22:01:48
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answer #3
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answered by Anonymous
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Dude! the value of pi (by any means on earth) is't 22/7. 22/7 is not non terminating non repeating . Divide it nd you will find it is repeating. The value of pi was determined by experimental analysis ( I asume) , I read sumwhere that it is an empirical value.the value of pi was established like this I believe (I wud have done this way. Take a thread of known length and make it the perimeter of a circle.Repeat for different values of the length and determine the diameter of the circle everytime. the ratio of length of thread to dia. is the value of pi, which you will get 3.14.............. if measured accurately. 22/7 is used because it gives the value close to the first few digits of value of pi.
Sincerely
Raj
2006-10-27 22:27:53
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answer #4
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answered by Raj S 2
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Who Discovered Pie
2016-12-29 13:56:08
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answer #5
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answered by ? 4
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discovered pi 22 7: https://tinyurl.im/e/who-discovered-the-value-for-pi-22-7
2015-05-14 18:32:18
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answer #6
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answered by Anonymous
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The two answer are correct.
Mathematicians had fascination with, circle since beginning of time, all heavenly bodies are circular to their eye.
In different part of this earth, builder needed to know, the amount of material needed to build circular, structures.
They guessed different relationships, tested it by drawing a circle and measuring it. Finally arrived at an usable constant number.
To day we have the most accurate approximation of the same constant, which was name pie a long time ago.
2006-10-27 22:10:04
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answer #7
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answered by minootoo 7
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archimedes tried to get an exact value of pi and he ended up approximating it to 22/7.but if you want it....
3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510
2006-10-28 02:28:27
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answer #8
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answered by Anonymous
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some believe the egyptians knew pi.
2006-10-27 22:02:34
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answer #9
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answered by Anonymous
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refer the following site:
http://en.wikipedia.org/wiki/History_of_%CF%80
2006-10-28 04:34:59
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answer #10
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answered by Sara 1
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