Summary of "Finding the Perimeter and Area of a Composite Shape | L-Shaped Example | Geometry | Math with Mr. J"

Main Ideas and Concepts:

Perimeter:
- The Perimeter is defined as the distance around the outside of a shape.
- To find the Perimeter, all side lengths must be added together.
- Missing side lengths can be determined using known measurements.
Area:
- Area is the amount of space or surface inside a shape.
- For composite shapes, the Area can be calculated by dividing the shape into simpler shapes (rectangles, triangles, etc.), finding their individual areas, and then summing them.

Identify any missing side lengths.
Use known dimensions to calculate missing sides:
- For vertical sides, ensure they sum up to the known total.
- For horizontal sides, use the lengths of the segments to find the total Length.
Add all side lengths together to calculate the Perimeter:
- Example calculation: 6 + 11 + 14 + 4 + 8 + 7 = 50 feet
Final Perimeter: 50 feet

Separate the Composite Shape:
- Divide the L-shaped figure into two rectangles (labeled A and B).
Calculate Area of Rectangle A:
- Use the formula: Area = Length × Width
- For Rectangle A (7 feet by 6 feet):
  - Area = 7 × 6 = 42 square feet
Calculate Area of Rectangle B:
- For Rectangle B (14 feet by 4 feet):
  - Area = 14 × 4 = 56 square feet
Sum the Areas:
- Total Area = Area of A + Area of B
- Total Area = 42 + 56 = 98 square feet