Perimeter of a Rectangle - Free Printable

Problem Overview:

The task involves calculating the perimeter of various rectangles. The perimeter of a rectangle is given by the formula:

\[
\text{Perimeter} = 2 \times (\text{Length} + \text{Width})
\]

We will solve each rectangle's perimeter step by step.

---

Rectangle 3A:

- Dimensions: Length = 5 cm, Width = 2 cm
- Formula: Perimeter = \(2 \times (\text{Length} + \text{Width})\)
- Calculation:
\[
\text{Perimeter} = 2 \times (5 \, \text{cm} + 2 \, \text{cm}) = 2 \times 7 \, \text{cm} = 14 \, \text{cm}
\]

Answer for 3A: \( \boxed{14 \, \text{cm}} \)

---

Rectangle 3B:

- Dimensions: Length = 6 cm, Width = 4 cm
- Formula: Perimeter = \(2 \times (\text{Length} + \text{Width})\)
- Calculation:
\[
\text{Perimeter} = 2 \times (6 \, \text{cm} + 4 \, \text{cm}) = 2 \times 10 \, \text{cm} = 20 \, \text{cm}
\]

Answer for 3B: \( \boxed{20 \, \text{cm}} \)

---

Rectangle 3C:

- Dimensions: Length = 7 cm, Width = 4 cm
- Formula: Perimeter = \(2 \times (\text{Length} + \text{Width})\)
- Calculation:
\[
\text{Perimeter} = 2 \times (7 \, \text{cm} + 4 \, \text{cm}) = 2 \times 11 \, \text{cm} = 22 \, \text{cm}
\]

Answer for 3C: \( \boxed{22 \, \text{cm}} \)

---

Rectangle 3D:

- Dimensions: Length = 22 cm, Width = 7 cm
- Formula: Perimeter = \(2 \times (\text{Length} + \text{Width})\)
- Calculation:
\[
\text{Perimeter} = 2 \times (22 \, \text{cm} + 7 \, \text{cm}) = 2 \times 29 \, \text{cm} = 58 \, \text{cm}
\]

Answer for 3D: \( \boxed{58 \, \text{cm}} \)

---

Rectangle 3E:

- Dimensions: Length = 8 m, Width = 5 m
- Formula: Perimeter = \(2 \times (\text{Length} + \text{Width})\)
- Calculation:
\[
\text{Perimeter} = 2 \times (8 \, \text{m} + 5 \, \text{m}) = 2 \times 13 \, \text{m} = 26 \, \text{m}
\]

Answer for 3E: \( \boxed{26 \, \text{m}} \)

---

Rectangle 3F:

- Dimensions: Length = 20 cm, Width = 20 cm
- Formula: Perimeter = \(2 \times (\text{Length} + \text{Width})\)
- Calculation:
\[
\text{Perimeter} = 2 \times (20 \, \text{cm} + 20 \, \text{cm}) = 2 \times 40 \, \text{cm} = 80 \, \text{cm}
\]

Answer for 3F: \( \boxed{80 \, \text{cm}} \)

---

Final Answers:

\[
\begin{aligned}
&\text{3A: } \boxed{14 \, \text{cm}} \\
&\text{3B: } \boxed{20 \, \text{cm}} \\
&\text{3C: } \boxed{22 \, \text{cm}} \\
&\text{3D: } \boxed{58 \, \text{cm}} \\
&\text{3E: } \boxed{26 \, \text{m}} \\
&\text{3F: } \boxed{80 \, \text{cm}}
\end{aligned}
\]