# Area of Circles, Rectangles, Triangles

- Author:
- Sara

What is the equation for the area of a circle?

What is the equation for the area of a rectangle?

## What is the equation for the area of a triangle? How does it relate to the area of a rectangle?

Create a circle and a rectangle that have the same width.

Are the areas the same? How do you know?

Find the area of this shape.