Ana drew a map of the Panama Canal. In the scale Ana used for the map, 4 centimeters represents 20 kilometers. The actual length of the Panama Canal is 82 kilometers. What is the length in centimeters of the Panama Canal on Ana’s map?

Question

410 cm
15.5 cm
16.4 cm
162 cm

Answer 1

To find the length of the Panama Canal on Ana's map, we need to set up a proportion.

4 cm represents 20 km, so to find the length represented by 82 km, we set up the following proportion:

4 cm / 20 km = x cm / 82 km

Cross multiplying, we get:

20 * x = 4 * 82
20x = 328
x = 328 / 20
x = 16.4 cm

Therefore, the length of the Panama Canal on Ana's map is 16.4 cm.

The correct answer is:

16.4 cm