Answer to Question #254638 in Geomatics for jen

Question

If the farm boundary is 3 km long, what would the length in mm on a 1:250 000 cadastral map be?

Answer 1

3 km is 3000 m, or 3 000 000 mm. 1 mm on map is 250 000 mm in real life, so, 3 million mm in real life is

$$d=3000000/250000=12\text{ mm}$$

on map.