圆锥内切球半径怎么求

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select * from tbl_Articles WHERE ArticleID=202637 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=202637 LIMIT 0,1
select * from tbl_Articles_sphinx where id=202637 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1303522,1114078,1275261,1102642,1094273,1086804,1073915,1123493,1115663,1108982,1105697,1129863,1305348,1050685,1117456,1081297,1371967,1126736,2757285,3088520,1105675,1060531,1081685,2788323,1093611,1103473,1112947,1062336,2827147,1104063) ORDER BY field (ArticleID,1303522,1114078,1275261,1102642,1094273,1086804,1073915,1123493,1115663,1108982,1105697,1129863,1305348,1050685,1117456,1081297,1371967,1126736,2757285,3088520,1105675,1060531,1081685,2788323,1093611,1103473,1112947,1062336,2827147,1104063)