求一片树叶的周长有什么方法

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select * from tbl_Articles WHERE ArticleID=277831 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=277831 LIMIT 0,1
select * from tbl_Articles_sphinx where id=277831 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1032968,1091757,1052599,1049030,1306209,1067437,1042718,1045867,1048112,1041343,1117620,1131015,1042879,1055694,1112917,1043609,1094235,1085390,988780,1071701,1128829,1132303,1044569,1127839,1049836,1045923,997282,1068900,1046866,1123655) ORDER BY field (ArticleID,1032968,1091757,1052599,1049030,1306209,1067437,1042718,1045867,1048112,1041343,1117620,1131015,1042879,1055694,1112917,1043609,1094235,1085390,988780,1071701,1128829,1132303,1044569,1127839,1049836,1045923,997282,1068900,1046866,1123655)