1. **State the problem:** Find the area of a triangle with base 12 cm and height 9 cm.
2. **Formula:** The area $A$ of a triangle is given by the formula:
$$A = \frac{1}{2} \times \text{base} \times \text{height}$$
3. **Substitute the values:**
$$A = \frac{1}{2} \times 12 \times 9$$
4. **Calculate:**
$$A = \frac{1}{2} \times 108 = 54$$
5. **Answer:** The area of the triangle is $54$ square centimeters.
Triangle Area 61B443
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.