请问300米等于多少平方米

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select * from tbl_Articles WHERE ArticleID=1415337 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1415337 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1415337 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2365737,216222,241851,176800,157118,294936,158163,2730335,1084785,243877,1135824,2302777,221739,2717968,2439412,2083507,2519220,2000430,3462229,1467371,2840721,1530078,2568517,429840,3418862,1119193,250959,283805,458116,156796) ORDER BY field (ArticleID,2365737,216222,241851,176800,157118,294936,158163,2730335,1084785,243877,1135824,2302777,221739,2717968,2439412,2083507,2519220,2000430,3462229,1467371,2840721,1530078,2568517,429840,3418862,1119193,250959,283805,458116,156796)