Find the perimeter of the following shape.
A regular octagon of side 12 cm

Answer

To find the perimeter of a regular octagon with a side length of 12 cm, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the shape**: A regular octagon is a polygon with 8 equal sides.

2. **Identify the formula for the perimeter**: The perimeter (P) of a polygon can be calculated using the formula:
\[ P = \text{Number of sides} \times \text{Length of one side} \]

3. **Substitute the values into the formula**: For a regular octagon:
- Number of sides = 8
- Length of one side = 12 cm

Therefore, the formula becomes:
\[ P = 8 \times 12 \text{ cm} \]

4. **Calculate the perimeter**:
\[ P = 96 \text{ cm} \]

5. **State the final answer**: The perimeter of the regular octagon is 96 cm.