Areas of Regular Polygons

How Do You Find the Area of a Regular Polygon When You Know the Length of the Apothem?

If you need to find the area of a regular polygon all you need is the apothem! This tutorial shows you how to find the area of a regular pentagon when you only know the apothem.
How Do You Find the Area of a Regular Polygon When You Know the Length of One Side?

It might surprise you to learn that all you need to know to find the area of a regular polygon is one side length and the number of sides. It's true! Watch this tutorial to find out how.