The measure of area commonly used in Great Britain and the USA. The dimensions of the British and American acre are slightly different. Both are approximately 4,047 m² in size, which is 40.47 ares (just under 63.5 x 63.5 metres). One hectare therefore consists of just under 2.5 acres. This was an area that could be worked in a certain period of time (half a day or even a day) with a team. In terms of meaning and size, the old European measurements of acre, yoke and acre are quite similar. The yoke in turn corresponds to 1,600 square kilometres. The long fathom corresponds to an arm span of 1.9 metres. See also under units of measurement
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