1. Area of Composite Figures
Including circles

2. A composite figure is made up of triangles, squares, circles, rectangles, and other two-dimensional figures. A composite figure is not a standard regular shape. To find the area of a composite figure, divide it into figures with areas you know how to find. Then, find the sum of the areas of those figures.

3. Examples

9. Figure Area Formula Square Rectangle Trapezoid Triangle Circle
𝐴= 𝑠 2
Rectangle
𝐴=𝑙 ∙𝑤
Trapezoid
𝐴= 1 2 ℎ ( 𝑏 1 + 𝑏 2 )
Triangle
𝐴= 1 2 𝑏ℎ
Circle
𝐴= 𝜋 𝑟 2
Semicircle
𝐴= 1 2 𝜋 𝑟 2