WEBThe square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the unit of area in the International …
WEBFor 1:25,000 maps, the grid lines are 4 cm apart. Each square on the map is 4 cm by 4 cm (16 cm 2) and represents 1 km 2 on the surface of the Earth. In each case, the grid lines …