Sir, Is there any defination of "Pi"?If no then is it possible to define"Pi"?If no Then will u please help me for my thinking that
in case of circle
P=2*("Pi") R
"Pi"=P/2R
"Pi"=P/D
Does it mean that if we break a wire circle and make it straigth line then there is relation between the length of wire and diameter of circle?, then is it possible to define "Pi"?
If we make diameter perpendicular to wire line then the relations of that rightangle triangle,do they have any important relations in aerodynamics? i am mechanical engineer, finding technical answer for this question.Please help me........Thanking you.........Avdhoot B.(09822549363) INDIAN
2007-12-23 16:45:16 · 6 answers · asked by Avdhoot B 1 in Science & Mathematics ➔ Engineering
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2007-12-25 20:03:29 · answer #1 · answered by Ahmed Saad Qureshi 3 · 0⤊ 1⤋
Pi is defined as the ratio of a circle's circumference to its diameter (not the other way around). If you break a wire circle and straighten the wire, there is no longer any diameter, so no pi for you! You will find that the constant, irrational number pi is a factor in all curved lines and planes whenever you need to do calculations involving them.
2007-12-23 17:22:36 · answer #2 · answered by TitoBob 7 · 0⤊ 1⤋
Pi is an irrational number that has no definate ending.
If you attempt to round it off and use that to form a circle you either get a minute gap or a minute overlap.
Thus the more you can take PI out in digits the better off you are if you are computing a course for a space ship between Earth and Mars
Rounding off Pi will put you behind or ahead of one of these planets by quater million miles or more when you're talking a distance of travel at 50 million miles.
Pi is an infinate. It has no definate ending. It just goes on and on.
An irrational paradox.
2007-12-23 18:26:26 · answer #3 · answered by Anonymous · 0⤊ 1⤋
In simple context of Euclidean plane geometry,
Pi is the ratio of a circle's diameter to its diameter.
Hence if you unfold a wired circle, the length of the straight line generated definitely has some relation to its diameter.Hence you are correct!!
The angles subtended by any right triangles are functions of 'pi' if you express them in radians.
Also pi plays an important role in most problems in real world, esp aerodynamics. I cant answer you exactly. But try some of sources below.
2007-12-23 17:28:14 · answer #4 · answered by AALUNGA >>RETURNS 7 · 1⤊ 2⤋
that was a very intersting question and i have the perfect technical answer for u.let me make this very simple
pi is actually a constant. let us take the circumferance of a circle
the circumferance is directly proportional to 2timesR,u can imagine that from one end to another end of a circle,u can connect with a distance of 2R through the centre since all equidistant lines passing from one end of the circle to another passes through the centre. allright.but for the curve of the circle,(since a circle is not a straight line and is curved),we use pi which introduces an addition of length to make it into a curve and hence the circumferance.
2007-12-23 17:57:26 · answer #5 · answered by doubtful 2 · 1⤊ 1⤋
The Pi is simply the ratio of any circle's diameter to its Circumference. This is one of the most enigmatic numbers in the world. Do read Eugene Wigner's "The unreasonable effectiveness of mathematics".
2007-12-23 16:52:29 · answer #6 · answered by Abhilash D 2 · 0⤊ 3⤋