How to Find the Volume of a Donut Using Pi

Hello, everyone! I'm going to teach you how to find the volume of a donut. The volume will be close your donuts actual volume but not exact because all donuts are different.

-Pen and Paper to write math

-Donut

To start, get a donut, any donut will do as long as it has a hole through it.

You now must find the Major and Minor Radius. To find the major radius you must find the distance between the axis (which is the red line) and the donuts center. To find the minor radius you must find the distance between the outer edge and the axis.

Sub your Major and minor radius inside the equation of V=(πr^2)(2πR). For example if your major radius was 5 units and your minor radius was 2 units, when you sub them in the equation, the equation will look like V=(π(2)^2)(2π(5)).

Now it is time to solve for the volume. If we go back and use our example V=(π(2)^2)(2π(5)), we will follow the order of BEDMAS (brackets, exponents, division, multiplication, addition and subtraction). First we will solve for our exponents, which is 2^2, which equals 4. Then we will multiply everything inside each bracket, the first bracket will equal 4π (12.56627061), and the second bracket will equal 10π (31.41592654). We will multiply these numbers together to give us a final answer of 40π^2 (394.784176 units^3) and this is the volume of my example donut.

Yay! You're done finding the volume of a donut! Now you can rest knowing you have a donut that is x cm^3 (I'm not sure why you wanted to know that but to each their own)

:)