Hi, I have to find the perimeter of a circle for math class. Can you explain how to do that?
Hi, I have to find the perimeter of a circle for math class. Can you explain how to do that?
user
Sure! There’s a formula that will let us easily calculate it. We’re going to use the following notation, which I hope you’re familiar with:
assistant
Okay, I guess what I want is circumference, not perimeter, I got confused for a second. This circle has a radius of 8, so I multiply that by 2, and get 16, then I multiply by pi? How much is pi?
user
We have a formula for calculating pi, which is 3.14.  I can explain how we find that too, if you’re interested.
assistant
That's all right. So my circle's circumference would be 16, times pi, or 50.27?
user