2014 National Question 4 Single-choice Differentiating 2014_退役省自主命题 (2014·理) 7.一个多面体的三视图如图所示,则该多面体的表面积为()正(主)视图側(左)䘠俯视图 A. $21+\sqrt{3}$B. $18+\sqrt{3}$C. 21D. 18 Answer keyA ☆ SaveCan't do it, show the explanation查看原卷 →