1. **Problem:** Mr. Jonas made a scale drawing with scale 1 cm : 3 m. The actual length is 12 m. Find the length on the drawing.
2. **Formula:** Scale drawing length = Actual length \div Scale factor
3. **Calculation:**
$$\text{Length on drawing} = \frac{12}{3} = 4 \text{ cm}$$
4. **Answer:** The length of the addition on the drawing is 4 cm.
Scale Drawing Length F685Ad
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