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In Geometry, pi lets us determine a circle's circumference if we know the circle's diameter (or radius, which is half the circle's diameter). We can determine this because the circumference is always pi (~3.14) times larger than the diameter of the circle. So, if the diameter of a circle is 1 foot, we know the circumference is 1 ft x pi which is approximately 3.14 feet. The formula for circumference is C = 2 x pi x r. Multiplying the 2 and the r (radius) in that equation gives you the length of the diameter of the circle, so the equation can be rewritten as C = pi x d which is what I used in the example in the last paragraph. Pi is also used to find the area of a circle by using the equation A=pi x r2. Calculus was used to create that formula which is beyond the scope of this explanation.
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How did pi get its symbol What is the reason for having assigned the symbol for pi?
The 'symbol' is a letter in the Greek alphabet - which is pronounced 'pi'. The connection between the letter and the ratio of the diameter and the circumference fo a circle may come from the fact that the letter pi is the first letter of the Greek word for perimeter, and the word for periphery.
Are there any theories on whether Pi 3.14 predicted 911 for example like the infinite numbers of pi are in actuallity dates for big things to happen please tell me any thoughts or resources on this?
There are no such theories, at least not by sane people. There is no reason to believe that the digits of pi have anything to do with dates of important events.
How do you calculate the area of a circle when you have the diameter?
All you need to do is multiply the diameter by pi. Pi's decimal equivalent is 3.14159... The reason that I put the triple period was to signify that pi is a non-ruccuring, or transcendental number, which means it has infinite digits after the decimal. For general purposes though all you would need to know is that pi = 3.14 since you would not likely need to calculate anything past two decimals.
What is the cubic root of pi squared multiplied by pi?
[pi^(1/3)]^2 * pi = pi^(2/3) * pi = pi^(5/3) The answer is the cubic root of pi to the fifth power.
What is pi plus pi plus pi?
(pi + pi + pi) = 3 pi = roughly 9.4248 (rounded) Well, if you use the common shortened version of pi which is 3.14 and add that 3 times, you get 9.42.
