梯形的面积怎么求

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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1085232,1139601,1154693,2387967,1199611,424728,1110942,2976915,3238806,3067500,1154268,549602,928993,1114510,605404,1098949,2811506,740207,3108368,426188,1099635,945709,1168341,1099679,1015965,1098139,1189524,1085200,853459,933842) ORDER BY field (ArticleID,1085232,1139601,1154693,2387967,1199611,424728,1110942,2976915,3238806,3067500,1154268,549602,928993,1114510,605404,1098949,2811506,740207,3108368,426188,1099635,945709,1168341,1099679,1015965,1098139,1189524,1085200,853459,933842)