|≈||approximately equal to|
|digits||indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)|
A rood /ˈruːd/ is an historic English and international inch-pound measure of area, as well as an archaic English measure of length.
Square gigametre or Square gigameter is a metric unit of area, symbol Gm2, is a multiple of the of SI prefixes (giga) used with the metre.