1. The first rectangle has dimensions 13 (height) and 7 (width).
2. The second rectangle has dimensions 15 (height) and 7 (width).
3. The square has side length 15.
Calculate the area of each shape separately (Rectangle 1, Rectangle 2, and Square), then add the areas together to find the total area of the polygon.
Area of Rectangle 1 = Height x Width
Area of Rectangle 1 = 13 x 7
Area of Rectangle 1 = 91
Area of Rectangle 2 = Height x Width
Area of Rectangle 2 = 15 x 7
Area of Rectangle 2 = 105
Area of Square = Side Length x Side Length
Area of Square = 15 x 15
Area of Square = 225
Total Area = Area of Rectangle 1 + Area of Rectangle 2 + Area of Square
Total Area = 91 + 105 + 225
Total Area = 421
Therefore, the total area of the polygon formed by Rectangle 1, Rectangle 2, and Square is 421 square units.