all looks incredibly easy: Comparison of Area units Unit SI 1 ca 1 m2 1 a 100 m2 1 ha 10,000 m2 100 ha 1 km2
(from http://en.wikipedia.org/wiki/Hectare#Are) vs. One acre equals 0.0015625 square miles, 4,840 square yards, 43,560 square feet[1] or about 4,047 square metres (0.405 hectares) (see below). While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends on which yard it is based on. (from http://en.wikipedia.org/wiki/Acre) even converting feet to yards sounds like nightmare to me, not mentioning cups per sq foot to gallons per acre (sorry if it is not useful in agriculture task, i am not an expert in this field ) thanks, Natalie ________________________________ From: "[email protected]" <[email protected]> To: U.S. Metric Association <[email protected]> Sent: Tuesday, June 25, 2013 7:12 PM Subject: [USMA:52985] Si and Agriculture examples Hello Everyone: >I am writing an article about the benefits of using SI units in Agriculture. I need concrete, real world examples of easy calculations such water needed per square meter or any other interesting, persuasive examples. >I know I have seen many examples associated with different topics. >Many thanks, >Bridget
