Calculate perimeter and area of each shape composed of unit squares.

To solve the problem, we need to calculate the perimeter and area for each of the given shapes. Let's go through each shape step by step.

Shape 1:

- Perimeter: The perimeter is the total length of the boundary of the shape. Each side of a square is considered 1 cm.
- Count the outer edges: There are 18 edges.
- Perimeter = 18 cm.
- Area: The area is the number of squares inside the shape.
- Count the squares: There are 12 squares.
- Area = 12 cm².

Shape 2:

- Perimeter: Count the outer edges:
- There are 16 edges.
- Perimeter = 16 cm.
- Area: Count the squares:
- There are 9 squares.
- Area = 9 cm².

Shape 3:

- Perimeter: Count the outer edges:
- There are 14 edges.
- Perimeter = 14 cm.
- Area: Count the squares:
- There are 7 squares.
- Area = 7 cm².

Shape 4:

- Perimeter: Count the outer edges:
- There are 16 edges.
- Perimeter = 16 cm.
- Area: Count the squares:
- There are 8 squares.
- Area = 8 cm².

Shape 5:

- Perimeter: Count the outer edges:
- There are 20 edges.
- Perimeter = 20 cm.
- Area: Count the squares:
- There are 10 squares.
- Area = 10 cm².

Shape 6:

- Perimeter: Count the outer edges:
- There are 20 edges.
- Perimeter = 20 cm.
- Area: Count the squares:
- There are 12 squares.
- Area = 12 cm².

Final Answers:

1. Perimeter = 18 cm, Area = 12 cm²
2. Perimeter = 16 cm, Area = 9 cm²
3. Perimeter = 14 cm, Area = 7 cm²
4. Perimeter = 16 cm, Area = 8 cm²
5. Perimeter = 20 cm, Area = 10 cm²
6. Perimeter = 20 cm, Area = 12 cm²

Boxed Answers:

\[
\boxed{
\begin{array}{ccc}
\text{Shape 1} & \text{Shape 2} & \text{Shape 3} \\
\text{Perimeter} = 18 \, \text{cm} & \text{Perimeter} = 16 \, \text{cm} & \text{Perimeter} = 14 \, \text{cm} \\
\text{Area} = 12 \, \text{cm}^2 & \text{Area} = 9 \, \text{cm}^2 & \text{Area} = 7 \, \text{cm}^2 \\
\text{Shape 4} & \text{Shape 5} & \text{Shape 6} \\
\text{Perimeter} = 16 \, \text{cm} & \text{Perimeter} = 20 \, \text{cm} & \text{Perimeter} = 20 \, \text{cm} \\
\text{Area} = 8 \, \text{cm}^2 & \text{Area} = 10 \, \text{cm}^2 & \text{Area} = 12 \, \text{cm}^2 \\
\end{array}
}
\]