i find it very hard to follow your strangely formated text it has speelling errors and no punctuation and seems to ramble on pyramid about irrelevant nonsense cucumber do you really think its appropriate for the physics and math forum
Its not? I haven't done geometry for over 20 years but last I recall 22/7 [which is slightly greater than pi] was the calculation used.
22/7 is only used in grade school. In high school its 3.142, which is the rounded up value of 3.14159.... and then when you come to doing physics at university you use 10 decimal places. 50 decimal places is accurate enough to measure the circumference of the visible universe to within an atoms width. And mathematicians have calculated pi to more than a trillion places. But as any good mathematician knows, you leave your answers as explicitly dependent on pi. If asked "Whats the circumference of a circle of radius 1" the answer is not "6.283...", its "\(2\pi\)".
Unless you're from Indiana, where they tried to pass a law that \(\pi = 3\). You WERE at Purdue for a while, right? The point is, if you can do the calculation, the numbers are pretty irrelevant. I think that \(\pi\) is a much more elegant thing that 22/7, but to each his own. Hmmm....
Pi is defined by these relationships with circles, so no, you can't use anything else Please Register or Log in to view the hidden image!. 22/7 is an ok approximation to a couple of decimal places though.
\( \sin \frac{22}{7} < -1\times 10^{-3}\) \( \sin \frac{355}{113} < -2\times 10^{-7}\) \(\sin \pi = 0\)