To become a Private Investigator you must first obtain your 2 year degree in criminal justice. The second thing you must do is obtain a lisence from your local city.
If you are wanting to become a PI you will need to obtain a PI license. To do that you will need to have a licensed PI sponsor you and then take your PI test. If you pass that, you will get your license. Good Luck.
You should know pi because of math. You need pi when you are dealing with circles. The only thing you really need to know about pi is 3.14 though.
Everyone needs Pi.
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You only need one decimal in pi (3.14). Pie goes on forever, if that's what you're asking.
You need Pi to find the radius or circumference of a circle and there are many more uses!
C = 2 * (pi) * (radius) So plug in 2 for radius C = 2 * (pi) * (2) C= 4(pi) If you need to approximate multiply 4 times 3.14. If you do not need to approximate then your answer is 4(pi)
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It is: 144*pi
You need the formula circumference = pi x diameter pi = 3.14.. This is by the way the definition of the special number pi.
Pi has over two billion digits but you can use 3.14 or if you need a fraction 22/7
Circumference = 2*pi*radius or diameter*pi