Composite Area with Rectangles and Triangles
Learning Objective
I can find the area of composite figures by breaking them into rectangles and triangles.
Key Concepts
To find the area of a composite figure, separate the figure into simpler shapes like rectangles and triangles.
The formula for the area of a triangle is base x height ÷ 2, and the formula for the area of a rectangle is length x width.
After finding the area of each individual shape, add the areas together to find the total area of the composite figure.
Practice Questions
This lesson includes 9 practice questions to reinforce learning.
View questions preview
1. Explain how to find the area of a composite figure made of rectangles and triangles.
2. A composite figure is made of a rectangle and a right triangle. The rectangle has a length of 10 cm and a width of 6 cm. The triangle's base is 6 cm and its height is 4 cm. What is the total area of the composite figure?
3. Find the area of the composite figure below, which is made of a rectangle and a triangle. (Imagine a rectangle with length 8 inches and width 5 inches, sitting on top of a triangle with base 8 inches and height 3 inches).
...and 6 more questions
Educational Video
Finding the Area of Composite Figures with Triangles | Math with Mr. J
Math with Mr. J