Because a map has alot of cities and towns, and a inch would take too much space. That's why they use centimeters.
100 miles
The scale of a map is decreased to show the representation of actual miles to the distance found on a map. If three fourths of an inch on a map was equal to 750 miles, an inch on the maps scale would equal 1,000 miles.
1,000 miles
1000 MILES
Different maps will have different map scales on them. If a map has a scale where one inch is equal to 800 miles, it is not a very detailed map.
If 1 inch equals 400 miles on the map, then 2.5 inches on the map would equal 1000 miles in real life. This is calculated by multiplying the scale factor (1 inch equals 400 miles) by the distance on the map (2.5 inches).
1 inch represents 750 miles. A half inch represents 375 miles.
You answered it yourself. If 1 inch= 750 miles, then 1 inch= 750 miles.
12
750 / 3 = 250 miles per 1/4 inch 1 inch = 1,000 miles
One inch on the map would equal 1000 miles since it is 4 times the size of three fourths of an inch.
It depends on the size of the map. Therefore, the length varies.