When using Pi, you can find both the area and circumference of a circle. When you find the area of the circle, you have to use a formula. That formula is area equals Pi times radius square. That is all you do to fine the area of a circle. For example let's say your radius is 3 then you would have to do 3.14 and multiply that by 3 squared and then you will have your answer which will then be your area of that circle.
To find the circumference all you do is use a formula as well. You have to do diameter times Pi and then you will find the circumference of a circle.
Pi is a number that goes on forever and ever. I don't much about Pi just what I remember from last year. Many people think that when it's Pi Day it's actually "pie" day. They think that it's actually real food. Well. Pi actually begins with the number 3.14. But, the truth is the numbers just keep going and going like they never stop (which they don't).
Pi is used for solving many problems for math. It is very useful sometimes. If you ever need it I think you will need it in an equation.
Just last week in math we were talking about the equation y=mx+b. Well, if you guys didn't already know in the equation y is the dependent variable. The m is the slope or the rate of the line. X is the independent variable. Last but not least the b is the Y-Intercept. As you can see all of these things are mentioned in the picture to the left.
This equation is helpful when they give you a graph that you have to place it in. For example let's say they give you the equation y=2/3x+3. This is when you will have to use the equation y=mx=b for a resource. Also know that when you are graphing the equation you will have to end up with a straight line.
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