You can use sine to help you find the area of a triangle! All you need is two sides and an angle measurement! This tutorial helps you find this formula.
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.
When you're working with similar figures, knowing the scale factor can help you find all sorts of pieces including side measurements and area. This tutorial shows you how to use the scale factor to help find the area of one of the figures.
Trying to find the area of a sector of a circle? Then check out this tutorial! You'll see how to use given information and the formula for the area of a sector to find the answer. Take a look!
Did you know that the formula for the area of a triangle can be found by using the formula for the area of a parallelogram? In this tutorial, you'll see how it's done! Take a look!
Parallelograms and rectangles are pretty similar. In fact, you can turn a parallelogram into a rectangle to find the formula for the area of a parallelogram! Check out this tutorial to see how it's done!
Did you know that you can figure out the formula for the area of a circle by first turning the circle into a parallelogram? It seems a little weird, but it really works! Watch this tutorial to see how it's done!