Finding Area: Decomposing and Summing Figures

This lesson teaches how to find the area of a figure by decomposing it into smaller rectangles and summing their areas. The video covers the basic formula for area, A = l × w, and demonstrates calculations using different units such as feet and centimeters. Examples include decomposing shapes into rectangles and calculating the total area by adding the areas of individual rectangles. The lesson concludes with a practical example of finding the area of a dog pen.

What is the formula for calculating the area of a rectangle?

How do you find the area of a shape by decomposing it?

Calculate the area of a rectangle with a length of 5 units and a width of 4 units.

What is the total area when you add 24 square centimeters and 9 square centimeters?

If a dog pen has dimensions of 7 feet by 5 feet and 3 feet by 3 feet, what is the total area?