To find the circumference of a circle with a radius of three, first you have to figure the formula which is pi times the diameter. The radius is only half of the diameter, so to figure the diameter multiply three with two or add three and three. The diameter is six. Next multiply pi, which equals 3.14 with 6, the diameter. 3.14 times six equals 18.84. That's how you find the circumference of circles.
If there is already a diameter, just multiply it by 3.14. With pi, you can find the diameter or half of a circle. However I'm only explaining how to find the diameter of a circle here. There may be other ways of solving for the circumference of a circle and I may not know how to do it. However I was taught this way and it seems to be easy.
Pi is 3.14 or 22/7. It is used to find diameter or circumference of a circle. It is actually the circumference of a circle. To solve for Pi or circumference of a circle you will need to find the size of the outer layer of the circle, then find half the measure of the circle. Now divide the outer layer measurement with the half measure and that will be your answer. Your answer may vary from the size of the circle, but still pi is the most accurate measurement of pi. 22/7 is another way of saying pi. It is the fraction form of pi and is not commonly used. We use 22/7 when solving fractions. 3.14 is a decimal, but it is much more simple to multiply it.22/7 is 22 divided by 7 and that is 3.14 with a line over three because it is just a very long number. There are so many digits we can't even count it all. The digits seem to never end and goes on forever.
Most people don't use pi because it is for finding the amount around a circle. People don't need to find circles, but squares. During Pi day in my algebra class, there will be an activity where you memorize as many Pi digits as you can. Did you know that pi is a homophone? It sounds like pie, but is actually very different from it. That is what homophone mean: sound the same, spell differently, and have different meaning.
The equation y+mx+b is slope. Y is equal to the equation. Mx is the fraction of how many times you move up, down, right, or left. B is the number or fraction that you start with. First, in an equation of y=2/3+5 you start with five at the y-axis and plot your first point. Then since the fraction is a positive you go up three and right three. There you plot your second point. There you have a positive slope. Another example, is y=5/7=12, since it is not a fraction change 12 into a fraction which will be 12/1. Start at 12 and go over one then plot your point. Next go up 5 and over 7. Therefore you have a positive slope.
You follow the steps and if b is a negative just start from the negative of the y-axis. This method is used in all the negative equations. The number you got is what y equals. As you can see, slope isn't very hard if you know the process.
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