This clip is just a few minutes of a multi-hour course.
Master this subject with our full length step-by-step lessons!
Lesson Summary: In this lesson, you'll how to calculate the area of a circle by knowing only its radius or diameter. This is one of the most useful calculations in all of math. The critical knowledge needed to do the calculation is knowing about the value of Pi and the radius of the circle. These topics are discussed in this lesson along with example problems to give the student confidence.