Answer:
7cm
Step-by-step explanation:
Given scale of the map;
2cm on map is 45 miles on land
A scale expresses the relationship between map distance and the true is distance;
2cm on map is 45 miles on land ; or ;
45miles on land is 2cm on the map
157.5miles on land will be [tex]\frac{157.5x2}{45}[/tex] = 7cm
The distance on the map is 7cm