Answer:
25.5 centimeters on the map.
Explanation:
Given the actual distance between New York and Boston is 306 km = 306,000 meters = 30,600,000 centimeters.
The map (in centimeters) is drawn at a scale of 1 : 1,200,000.
It means 1 cm of map is actual distance of 1,200,000 in real.
So we can multiply the scale factor with actual distance to find the length on map.
Mathematically, length on map = scale factor * actual distance.
Length on map = (1 / 1,200,000) * 30,600,000
Length on map = 30,600,000 / 1,200,000 = 306 / 12 = 25.5 cm.
Hence, It is 25.5 cm on the map.