Stellar distances, like the distances of stars and galaxies from Earth
Because length is one dimension, thus it's measured in linear units.
Focal length is measured in milimeters (mm) -----------------------------------------------------------------
You can mutiply or divide the units to find the answer.
All lengths are measured in metres.
Not all of them no. Weight can be measures in pounds. Mass can be measured in pounds But astronomical units are a measure of distance so these are not measured in pounds. Finally pounds are a very outmoded unit it. The international standard unit for measuring weight is the Kilogram.
Normally in Astronomical Units (AU) which is the average distance from the earth to the sun.
Angular displacements measured in radians or stradians, lengths of lines measured in units of length.
Mercury--0.387 astronomical units Venus--0.723 astronomical units Earth--1.0 astronomical units Mars--1.524 astronomical units Jupiter--5.203 astronomical units Saturn--9.529 astronomical units Uranus--19.19 astronomical units Neptune--30.06 astronomical units Pluto--39.53 astronomical units Please note that these are all mean distances, and the actual distance will vary as to the location of the specific planet in its specific orbit.
I think you mean the distance from the Earth to the Sun. This distance is measured in Astronomical Units (AU)
There is no specific name. This is partly because derived units, such as volume, can be measured just as directly as lengths.
Length can be measured in feet, inches and centimetres
An area is measured in square units, so for lengths measured in feet, the area would be measured in square feet.The surface area of a box, is just the sum of the areas of each face, each of which is measured in square units.