Sorry, I don't yet have an answer to that question - though you may want to try me on mobile
where I can do far more
How many The square metre (also spelled square meter; see spelling differences), the SI derived unit of area, with symbol m (33A1 in Unicode) in a The square foot (Sq Ft), the imperial unit / U.S. customary unit (non-SI non-metric) of area, used mainly in the United States, the United Kingdom, Hong Kong, Japan, Afghanistan and Canada?
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