https://file.aiquickdraw.com/mathbot/file/17297617239731j7t9xmq.jpg

The question shown in the image asks:

"A road map has a scale of 1 cm : 25 km. How long is a 1200-km road on the map?"

### Solution:
The map scale is given as 1 cm : 25 km. This means that 1 cm on the map represents 25 km in reality.

To find the length of a 1200-km road on the map, we use the ratio provided by the scale:

\[
\frac{1 \, \text{cm}}{25 \, \text{km}} = \frac{x \, \text{cm}}{1200 \, \text{km}}
\]

Now, solve for \( x \) (the length on the map):

\[
x = \frac{1200 \, \text{km} \times 1 \, \text{cm}}{25 \, \text{km}} = \frac{1200}{25} = 48 \, \text{cm}
\]

### Final Answer:
The length of the 1200-km road on the map is **48 cm**, so the correct option is **A. 48 cm**.

Would you like more details or have any further questions? 

Here are 5 related questions to expand on this concept:
1. If a map had a scale of 1 cm : 50 km, how long would a 600-km road be on the map?
2. How would the scale change if the length of a 1200-km road on a map were 24 cm?
3. What would be the real-life distance if a road is 10 cm long on a map with a scale of 1 cm : 30 km?
4. If the scale of the map is doubled (1 cm : 12.5 km), how long would the 1200-km road appear?
5. Can the scale of a map be represented as a fraction or ratio? How would you interpret that?

**Tip:** Always check the units when working with map scales to ensure accuracy in your calculations!

A road map has a scale of 1 cm : 25 km. How long is a 1200-km road on the map?

Learn how to calculate the length of a 1200-km road on a map with a scale of 1 cm : 25 km. The solution involves understanding proportion and scale conversion. Suitable for middle school students.

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