Because the Earth is sperical is shape.
Latitude is measured on a map or globe in degrees, with the equator being 0 degrees and the North and South Poles being 90 degrees north and south, respectively.
Distance from the Equator is measured using lines of latitude. The Equator is designated as 0 degrees latitude, and distances are measured in degrees, minutes, and seconds north or south of the Equator.
On a globe, locations are measured using latitude and longitude. Latitude lines run horizontally and measure distances north or south of the equator in degrees, while longitude lines run vertically and measure distances east or west of the Prime Meridian. Each degree of latitude is approximately 69 miles apart, while the distance between longitude lines varies based on the latitude. Together, these coordinates help pinpoint exact locations on Earth.
The radius of a sphere would be measured in some unit of length, depending upon how large the sphere is. If the globe is a planet, I would use kilometers.
The measurement used to determine distances in degrees from the prime meridian is called longitude. Longitude lines run vertically from the North Pole to the South Pole and are measured in degrees, with the prime meridian at 0 degrees. Distances east and west of the prime meridian are expressed in degrees up to 180 degrees in either direction.
All the way around anything that's measured in angles is typically 360 degrees, and the earth is no exception.
The angular distance north or south of the earths equator, measured in degrees, along a meridian, as on the map or globe.
A globe can have 36 meridians drawn at 10-degree intervals. This is because meridians are lines of longitude that extend from the North Pole to the South Pole, and they are measured from 0 degrees (the Prime Meridian) to 360 degrees. Dividing the 360 degrees by 10 degrees gives 36 meridians.
they are measured in AU
Long distances are measured in AU in Eve Online. For short distances, it is measured in KM.
The distances are measured from the tip of home plate to the bottom of the fence.
Usually such distances are measured either in light-years, or in parsecs.