Question 74160
Here are some applications from people.bath.ac.uk/ma3mju/uses.html    


* Pi can be used to calculate the area and perimeter of a circle, or any other shape involving circles
    * Pi is used in hundreds of scienific calculations, some of which include;
         1. Describing DNA
         2. A rainbow
         3. Ripples from rain drops
         4. Einstein's Gravitational Feild Equation
         5. Waves
    * Testing the accuracy of super computers
    * Cryptography - the science of coding
    * Generation of a Random Number
    *Pi appears in one of the most fascinating formulae in history; Euler's famous equation 'eip + 1 = 0', which connects constants e, i ({{{sqrt(-1)}}}) and pi
    *Checking for accuracy - as there are now millions upon millions of known decimal places of pi, by asking a super computer to compute this many figures its accuracy can be tested
    *Calculating field strength - it is included in Einstein's Gravitational Field Equation
    *Calculation of time period, T, in Simple Harmonic Motion - 'T = 2p {{{sqrt(m/k)}}}' (used to find harmonic frequency of an object-physics application)
    *Determining the distribution of primes - the probability that two randomly selected integers are relatively prime (ie have no common factors) is 6 /{{{pi}}}2


This is just some of the many applications of pi. You can google more if you like so you can find equations and problems that are solved by {{{pi}}}.