If 12cm on a map represents 60km, what will be the length used to represent 400km on the map?
A. 80cm
B. 70cm
C. 60cm
D. 40cm
Answer (2)
To solve this problem, we need to establish the scale of the map and then determine the length that represents 400 km.
First, we know that 12 cm represents 60 km. This means the scale factor for the map is:
60 km 12 cm = 5 1 cm per km
This indicates that every 1 km in real life is represented by 0.2 cm on the map.
Next, we need to find out how many centimeters on the map would represent 400 km. We'll use the scale factor we've determined:
400 km × 5 1 cm/km = 80 cm
So, the length used to represent 400 km on the map will be 80 cm .
Therefore, the correct answer is option A. 80 cm .
The scale of the map indicates that 1 cm represents 5 km. Therefore, to represent 400 km, you need 80 cm on the map. The correct answer is option A: 80 cm.
;
