Hello everyone.
How do you extract the constant pi accurately (using numerical) method ?
My father used to tell me that you could get pi from 22/7 ?
Please don't tell me to draw a circle ... :D
Best regards,
-septerra-
2007-04-30 01:02:31 · 8 answers · asked by septerra 2 in Science & Mathematics ➔ Mathematics
First, 22/7 is a fair approximation, but 355/113 is much better. But pi is not equal to any fraction involving whole numbers (sorry).
There are many ways to approximate it more accurately. One is
pi=4-4/3+4/5-4/7+4/9-4/11.......
Take as many terms as you wish. Unfortunately, this gets close to pi very slowly. There are other, much faster methods.
2007-04-30 01:09:46 · answer #1 · answered by mathematician 7 · 2⤊ 0⤋
draw verticle 1 foot lines on the floor of your house. Then construct a 6 inch needle. Randomly throw this needle at the floor 1000 times and count the number of times the needle hits a line. Now take 1000 / (# of hits) and you have a rough estimate of pi. (Warning: this method is extremely inefficient and time consuming, I suggest going to the website http://www.angelfire.com/wa/hurben/buff.html and trying it with a computer.
2007-04-30 08:33:21 · answer #2 · answered by Brendan 2 · 0⤊ 0⤋
22/7 is ok for many calculations but not extremely accurate.
See the web link below for some series that converge to pi.
2007-04-30 08:13:46 · answer #3 · answered by Robert L 7 · 0⤊ 0⤋
Pi (spoken as pai - i as I)
It is irrational number That means it can not be expressed in form of a/b.
Its approx value is 22/7
More accurate value is 355/113 (remember as 113355 put last 3 on top)
Value in decimal form is 3.1415926....
It is non terminating and non repeating decimal.
2007-04-30 08:29:43 · answer #4 · answered by dipakrashmi 4 · 0⤊ 0⤋
The only way is learn it. There are plenty web sites list it to many decimal places.
22/7 is an approximation so don't use it to work it out.
2007-04-30 08:12:22 · answer #5 · answered by Poor one 6 · 0⤊ 0⤋
Please visit http://en.wikipedia.org/wiki/Pi . It contains many equations how to get the numerical approximation of Pi, and there are helpful explanations. Hope that helps.
2007-04-30 08:11:06 · answer #6 · answered by wala_lang 2 · 0⤊ 0⤋
Well, first you need some pie crust. Then, you must choose the fillings of your likeing. It doesnt take much math to make pie. I like banana cream pie. It tastes good.
~e=mc^2
2007-04-30 08:06:51 · answer #7 · answered by Anonymous · 0⤊ 1⤋
3.1415926535897932384626433832795
100% sure that is pi cause i just busted out my scientific calculater!!!!!!!!
2007-04-30 08:09:24 · answer #8 · answered by Anonymous · 0⤊ 1⤋