【进阶级练习题48】 5 P6 ~: n! E. l* v4 v原创:Joseflin先生(台湾) 整理:SHAONX(上海) 3 J) v& T9 M- J- n i, k. P; |8 X, f8 Z4 h% a求: m# L. X' D/ f0 u
1.AB之垂直距离为何? 4 i3 v" ? ] h$ f a.19.5606 b. 19.6506 c. 19.66054 i+ W* y6 {5 d2 ~
2.∠ABC之角度为何? / S0 A4 n m d. m a. 51.589° b. 51.895° c. 51.985° " c8 {; V. ^+ a3. 红色剖面线区之面积为何? % S$ T U/ ?4 G& X a. 108.5891 b. 108.8519 c. 108.9815 " e! h/ t! I6 ~% e( ^7 h: k. ~; @4. 绿色剖面线区之周长为何? 7 M0 X- ~9 |5 }7 L# L% j a. 100.4837 b. 100.8473 c. 100.7384