The length and breadth of a rectangle are 12 cm and 5 cm respectively. Calculate its perimeter (in cm).

Options

A. 68
B. 20
C. 40
D. 34

Answer

To calculate the perimeter of a rectangle with given dimensions, follow these steps:

### Step-by-Step Solution:

1. **Identify the dimensions of the rectangle:**
- Length (L) = 12 cm
- Breadth (B) = 5 cm

2. **Recall the formula for the perimeter of a rectangle:**
- The formula for the perimeter (P) is given by:
\[ P = 2 \times (L + B) \]

3. **Substitute the values of length and breadth into the formula:**
- Substitute L = 12 cm and B = 5 cm into the formula:
\[ P = 2 \times (12 + 5) \]

4. **Calculate the sum of length and breadth:**
- Calculate \(12 + 5\):
\[ 12 + 5 = 17 \]

5. **Multiply the sum by 2:**
- Now, multiply by 2:
\[ P = 2 \times 17 = 34 \]

6. **State the final answer:**
- Therefore, the perimeter of the rectangle is:
\[ P = 34 \text{ cm} \]

### Final Answer:
The perimeter of the rectangle is 34 cm.

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