|≈||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.
Australia, Canada, New Zealand, and some other members of the Commonwealth of Nations—being former British colonies that have since metricated—employ a "metric cup" of 250 millilitres. Although derived from the metric system, it is not an official metric unit.
|=||16 2⁄3||international tablespoons (15 ml each)|
|=||12.5||Australian tablespoons (20 ml each)|
|≈||8.80||imperial fluid ounces|
|≈||8.45||U.S. customary fluid ounces|