In this lesson I will teach you about the area and circumference of a circle. We will be working with formulas so feel free to have a calculator to help you with the math. Also, pay attention to the units of measure- area units of measure are different than that of the circumference. In this lesson I will go over the basic parts of a circle to include the radius, diameter and circumference. Also, I will talk about the famous number “pi” and how it’s calculated. Circles are a big topic and there is much more to learn about circles and there properties. However, let’s get started on circles by mastering the fundamentals and learning about the area and circumference.