1. **State the problem:** We have a scale drawing where 1 cm represents 3 m in real life. The patio is rectangular with dimensions 4 cm by 3 cm in the drawing. We need to find the area of the real patio in square meters. 2. **Formula for area of a rectangle:** $$\text{Area} = \text{length} \times \text{width}$$ 3. **Convert drawing dimensions to real dimensions:** - Length in real life: $4 \text{ cm} \times 3 \text{ m/cm} = 12 \text{ m}$ - Width in real life: $3 \text{ cm} \times 3 \text{ m/cm} = 9 \text{ m}$ 4. **Calculate the area of the real patio:** $$\text{Area} = 12 \text{ m} \times 9 \text{ m} = 108 \text{ m}^2$$ 5. **Answer:** The area of the real patio is $108$ square meters.