Hi. My name is Charles, and I am one of the math teachers from the Maxim Workshop. I am now going to teach you how to do some math. I am going to show you how to calculate the area of a circle. There are possibly a few things you need to know about the circle before you progress with this. You have the measurement of the radius which equals half the distance from one side to another passing through the origin. So if you take any point on the circle's perimeter and you extend the line going towards the origin, you have the radius. Again you also have to remember that the value of pie is equivalent to 3.142, we shall approximate for this equation for the purpose of other calculations here, say the value of pie is 3. Now the next step is to find the out what equation we are going to use. So the area of the circle probably established by some Greek mathematician is equal to Pie R square. Now, this is the equation we are going to use to calculate the area so I would say the first step we want to do is to establish what value is going to take for R. So imagine if I said R has a value of 6 meters. Now, we are going to substitute R into our equation here. So we got A equals pie which we approximated to 3 and then R-square so R is 6, so 6-square. Now, all you have to do there is figure out what 6-square is and multiply by 3. So you have 3, 6-square is basically 36, so you have 3 times 36. Now, the easy way to multiply this is first, we'll multiply 3 by 30 and 3 by the six, so you would have 90 + 18. And this is the way to do without a calculator, so that leads to 108 square meters. Remember your area, because of your value for R has been multiplied by 6 by itself, you also need to multiply the unity by itself; so m times m equals m-square, and 108 therefore equals to the area of this circle. So that is pretty much how to establish the area of the circle.