|≈||approximately equal to|
|digits||indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)|
The acre-foot is a unit of volume commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, irrigation water, and river flows.
The cubic decametre (in British English and international spelling as used by the International Bureau of Weights and Measures) or cubic decameter (in American English) is the unit of volume. Its SI symbol is dam3. It is the volume of a cube with edges one decametre in length.