Nautical mile 1 sea mile", followed by "For most practical purposes distance is measured from the latitude scale, assuming that one minute of latitude equals one nautical mile". One tenth of a nautical mile is a cable length. The derived unit of speed is the knot, defined as one nautical mile per hour. The metre was originally defined as of the meridian arc from the North pole to the equator passing through Dunkirk. The Earth’s circumference is therefore approximately 40,000 km. The equatorial circumference is slightly longer than the polar circumference – the measurement based on this (40,075.017 km x x =
Missouri Route 240 of the city, Route 240 serves as the western end of Route 124. Route 240 then becomes hillier until it meets U.S. Route 40, where it flattens out and meets Alternate Route 240, which provides easier access from eastbound Route 240 to westbound Route 40, and vice versa ("see below"). Mainline Route 240 then turns east onto US 40. Routes 40 and 240 cross Moniteau Creek and enter Boone County. After passing through Midway, Route 240 comes to its end at Interstate 70. Highway 40 then merges onto eastbound I-70. Business Loop 240 runs entirely on the old routing of