1. **State the problem:** We have a road on a map that measures 14 cm, and the scale of the map is 1 : 20,000. We need to find the actual length of the road in kilometers.
2. **Understand the scale:** The scale 1 : 20,000 means 1 cm on the map represents 20,000 cm in reality.
3. **Set up the formula:** Actual length = Map length \times Scale factor
4. **Calculate the actual length in centimeters:**
$$\text{Actual length} = 14 \text{ cm} \times 20,000 = 280,000 \text{ cm}$$
5. **Convert centimeters to kilometers:**
- There are 100 cm in 1 meter.
- There are 1000 meters in 1 kilometer.
So,
$$280,000 \text{ cm} = \frac{280,000}{100} \text{ m} = 2,800 \text{ m}$$
$$2,800 \text{ m} = \frac{2,800}{1000} \text{ km} = 2.8 \text{ km}$$
6. **Final answer:** The actual length of the road is **2.8 kilometers**.
Road Length 99B1Be
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