what two numbers (not decimal or fractions, normal whole numbers) I have to divide to get pi?
I know you can get it by dividing perimeter with radius, but they are both calculated with pi. and I need 2 ordinary numbers to divide to get infinite pi.
pls help...
2007-09-21 02:11:38 · 11 answers · asked by ? 4 in Science & Mathematics ➔ Mathematics
Dividing 355 by 113 gives a value of pi accurate to about 1 part in 12 million.
However, it is a long-proven mathematical fact that the exact value of "pi" is not the ratio of any two whole numbers, no matter how large. This is not because we haven't found them yet, it's because they could not possibly exist, and we know.
There is a whole series of more and more accurate fractions, starting with 3 / 1 and 22 / 7, but the next few after 355 / 113 have more than twice as many digits, and are only a little bit more accurate anyway. The series continues with the numbers getting bigger and bigger, and the error getting smaller and smaller, but it never gets to zero.
2007-09-21 03:01:52 · answer #1 · answered by Anonymous · 0⤊ 0⤋
IT ISN"T 22/7 because when divided 22/7 has a repeating value....3.142857142857142857142857142857142857142857.....
If those two numbers existed pi would be a ratio and a rational number. pi is the circumference divided by the diameter. When pi is estimated instead of a circle use a 32 sided polygon, each little segment is a chord. Measure a chord multiply by 32 and divide by the diameter.
I work as a CAD drafter and a drafting professor explained that to the class.
Definition
If you measure the distance around a circle and divide it by the distance across the circle through the center, you will always come close to a particular value, depending upon the accuracy of your measurement. This value is approximately 3.14159265358979323846... We use the Greek letter (pronounced Pi) to represent this value. The number Pi goes on forever.
2007-09-21 09:41:31 · answer #2 · answered by Will 4 · 1⤊ 0⤋
An approximation is 22 divided by 7 but it's by no means as accurate as the real Pi.
2007-09-21 09:16:29 · answer #3 · answered by CSW 3 · 0⤊ 0⤋
22/7 for rough calcs
355/113 for finer.
Real value of pi is given by;
3.0 +1/3 -1/5 +1/7- 1/9 + 1/11 - 1/13 + 1/15 - 1/17 + 1/19 etc etc
2007-09-21 09:19:04 · answer #4 · answered by Anonymous · 1⤊ 0⤋
22/7 is used as an APPROXIMATION of pi, but it is nowhere near exact. In fact, since pi is irrational, it would be impossible to find an exact fraction that gave the value of pi, since that would be a contradiction of pi's rationality.
2007-09-21 09:15:55 · answer #5 · answered by whitesox09 7 · 4⤊ 0⤋
22/7 is the close approximation used. There are other methods outlined at the URL below
2007-09-21 09:24:19 · answer #6 · answered by Anonymous · 0⤊ 0⤋
22 / 7 will give you an approximation of pi. (It's not the actual value of pi, though!!)
2007-09-21 09:16:14 · answer #7 · answered by Mathematica 7 · 0⤊ 0⤋
As an irrational number, pi is not the quotient of two numbers, sorry!
2007-09-21 09:17:49 · answer #8 · answered by John V 6 · 2⤊ 1⤋
There aren't any!
Ï is an irrational number, so it cannot be represented
as the quotient of 2 whole numbers.
2007-09-21 10:02:32 · answer #9 · answered by steiner1745 7 · 0⤊ 0⤋
22/7
2007-09-21 09:15:34 · answer #10 · answered by ? 4 · 0⤊ 3⤋