Area of Circles, Rectangles, Triangles

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.
Close
– Sara

Information: Area of Circles, Rectangles, Triangles