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The scale of the map is given as 1 : 50,000, which means that 1 cm on the map represents 50,000 cm in real life.

The map shows the road length as 8.5 cm. To find the real-life distance, we can set up the following calculation:

1. **Convert map measurement to real-life measurement**:
   \[
   \text{Real length} = \text{Map length} \times \text{Scale factor}
   \]
   Substituting in the values:
   \[
   \text{Real length} = 8.5 \, \text{cm} \times 50,000 = 425,000 \, \text{cm}
   \]

2. **Convert centimeters to kilometers**:
   Since 1 kilometer is 100,000 cm:
   \[
   \text{Real length in km} = \frac{425,000 \, \text{cm}}{100,000} = 4.25 \, \text{km}
   \]

### Answer:
The length of the real road is **4.25 kilometers**.

Would you like more details on any of the steps? Here are some related questions:

1. How do we handle different map scales when converting distances?
2. What if the scale were 1:100,000 instead of 1:50,000?
3. How can we convert measurements to other units, like miles?
4. What is the importance of understanding scales in real-life applications?
5. How do we calculate area on a map with a specific scale?

**Tip:** Always double-check units when converting, as small errors can lead to large inaccuracies in real-world distances.

A road map has a scale of 1:50000. The length of a road on the map is 8.5 cm. Work out the length of the real road in kilometres.

Learn how to determine the real length of a road using a map with a scale of 1:50,000 and a measured length of 8.5 cm. This solution covers scale and unit conversion, resulting in a real-world distance of 4.25 km. Ideal for students in Grades 7-8.

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