pi=3.141..........................................
=PI()If you want to multiply PIr2 use the formula: =PI()*(r^2)
This depends on wether you want your answer in radians or degrees. If you want the answer in degrees, the highest and lowest point of the sin graph wil always be 90, 270, 450... and crosses the zero point at 180, 360, 540... If you want your answer in radians, the graph crosses the zero point, at pi, 2 pi, 3 pi... and has it's highest/lowest point at 1/2 pi, 1 1/2 pi, 2 1/2 pi...
Pi is the number you have to use to solve many circle equations. If you want to find the area of a circle, use radius squared times pi. For the circumference, use diameter times pi.
How many places do you want it figured to? 3.14159 is a fairly common answer, but the value of pi is infinite.
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.
Area = (pi * radius)^2, so: Area = (pi * 1.2cm)^2 Area = 1.44 pi cm (an exact value) If you want to approximate the area, just multiply 1.44 by pi.
For fun Hope this helps
That depends on how precise you want the approximation.
I assume you want to convert from degrees to radians. To convert from degrees to radians, you multiply by (pi / 180).
If you use pi as 3.14, the answer is 12.56. If you use the pi button on your calculator, it is still simplified to 12.56, but if you want the full number, it is 12.56637061. The algebra is pi multiplied by diameter OR pi multiplied by radius squared Pi is often just used as 3.14
24.492, unless you want more digits of pi besides the standard 3.14. The circumference of a circle is equal to the diameter multiplied by pi, or the radius multiplied by two, then multiplied by pi. c = d*pi c = 2*r*pi c = circumference d = diameter r = radius pi = 3.141593
You can't. Pi is just... idk... pi and taking the square root of pi would only lead you to another infinite irrational number. Unless you want gazillion zillion numbers, don't square root pi. I can give you the result of pi for up to whatever the calculator says, which by far is 1.772004515. But... remember the answer is infinite!