The distance between two cities on a map is 3.5 centimeters. The map uses a scale in which 1 centimeter represents 20 kilometers.

What is the actual distance between these two cities in kilometers?
A.55 km
B.60 km
C.65 km
D.70 km

To find the actual distance between the two cities, we use the given map scale: 1 centimeter on the map represents 20 kilometers in real life.

The distance on the map is 3.5 centimeters, so we multiply this by 20 kilometers to get the actual distance:

\[
\text{Actual distance} = 3.5 \, \text{cm} \times 20 \, \text{km/cm} = 70 \, \text{km}
\]

Thus, the actual distance between the two cities is **70 kilometers**.

The correct answer is **D. 70 km**.

Would you like more details or have any questions? Here are five related questions to expand on this topic:

1. What if the distance on the map were 5 centimeters, how far would the cities be apart in real life?
2. How would the actual distance change if the map scale were 1 cm = 50 km?
3. What is the ratio between map distance and actual distance in this scenario?
4. How could you use this scale to determine the distance of a third city 2.5 cm away on the same map?
5. How does changing the map scale affect the detail shown on the map?

**Tip:** When using a map scale, always multiply the map distance by the scale factor to get the actual distance.

The distance between two cities on a map is 3.5 centimeters. The map uses a scale in which 1 centimeter represents 20 kilometers. What is the actual distance between these two cities in kilometers?
A.55 km
B.60 km
C.65 km
D.70 km

Find the actual distance between two cities based on a map scale of 1 cm = 20 km and a map distance of 3.5 cm. This problem introduces key concepts in ratios, proportions, and unit conversion, perfect for students in Grades 5-7.

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