sanjaygeorge Posted October 23, 2005 Share Posted October 23, 2005 can anyone help me how to derive pie the value is commonly known as 22/7 and it is circumference by diameter. but is it broughty in no.??? Link to comment Share on other sites More sharing options...
the tree Posted October 23, 2005 Share Posted October 23, 2005 Pie just refers to cooked food underneath a layer of pastry. I guess you were actually talking about pi wich is, as you say, circumfrence over diameter. 22/7 is an aproximation of pie. In fact, circumfrence and radius cannot both be rational numbers. Link to comment Share on other sites More sharing options...
cosine Posted October 23, 2005 Share Posted October 23, 2005 can anyone help me how to derive pie the value is commonly known as 22/7 and it is circumference by diameter. but is it broughty in no.??? Sorry' date=' what's broughty? The value you've given is an approximation. Pi is a trascendental number, meaning that it is not rational, nor is it a rational root of any rational number (meaning that it can't be expressed as [math']a^{b}[/math] where [math]a[/math] and [math]b[/math] are rational, nor can it be expressed as the root of any polynomial equation). If you would like an easy excercise in deriving pi, trying taking the circle formulas you know, [math]C = 2 \pi r[/math] and [math]A = \pi r^{2}[/math], and trying to say, approximate C or A of a given circle, and then solve the equation for pi. The most straight foward way to do this is to put a regular polygon around or inside the circle and increase the number of sides of the polygon in order to better approximate the circle (or you could do both polygons around and inside the circle and then take the average of the two for a slightly better approximation). Then once you have an Area or Circumfrence, divide that by [math]r^{2}[/math] or [math]2r[/math] respectively. Have fun! (By the way, this method of approximating the circle with regular polygons is attributed to Archimedes and is known as the "Archimeden method".) Link to comment Share on other sites More sharing options...
RyanJ Posted October 23, 2005 Share Posted October 23, 2005 Have a look here and here Quite a lot of approximations and formuals in those two Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
Mokele Posted October 23, 2005 Share Posted October 23, 2005 can anyone help me how to derive pie First, pre-heat your oven to 350 and get the ingredients together.... Link to comment Share on other sites More sharing options...
sanjaygeorge Posted October 24, 2005 Author Share Posted October 24, 2005 sorry,...........guys. it was pi Link to comment Share on other sites More sharing options...
sanjaygeorge Posted October 24, 2005 Author Share Posted October 24, 2005 some scientist created a equation to derive pi. anyone knows??? Link to comment Share on other sites More sharing options...
the tree Posted October 24, 2005 Share Posted October 24, 2005 [math]\pi=\frac{diameter}{circumfrence}[/math] That is all. Link to comment Share on other sites More sharing options...
RyanJ Posted October 24, 2005 Share Posted October 24, 2005 some scientist created a equation to derive pi. anyone knows??? Did you happen to look at the link(s) I posted? those contain just baout the most complete list of formulas I have found Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
--00-- Posted November 13, 2005 Share Posted November 13, 2005 [math]\pi=\frac{diameter}{circumfrence}[/math]That is all. actually' date=' [math']\pi=\frac{circumference}{diameter}[/math] Link to comment Share on other sites More sharing options...
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