1. **Problem Statement:** Calculate the perimeter of the polygon with sides 4 cm, 8 cm, and 12 cm.
2. **Formula:** The perimeter $P$ of a polygon is the sum of the lengths of all its sides.
3. **Calculation:**
$$P = 4 + 8 + 12$$
4. **Simplify:**
$$P = 24$$
5. **Answer:** The perimeter of the polygon is 24 cm.
This completes the solution for the first problem.
Polygon Perimeter 25Ee3E
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.