For example on wikipedia for Switzerland it says the country has an area of 41,285 km². Does this take into account that a lot of that area is actually angled at a steep inclination, thus the actual surface area is in effect larger than what you would expect when looking onto a map in satellite view?
Due to the fractal nature of geometery, all they would have to do is use more fine-grained measurements. :)
That would work for the perimeter, but not for the area.