按照圖畫出所示圖形,求剖面線區(qū)域的面積。()
A.30152.0943 B.30152.0934 C.30152.0394 D.30152.0493
A.106.3382 B.106.3823 C.106.3283 D.106.3832
按照圖畫出所示圖形,求剖面線區(qū)域的周長。()
A.188.4956 B.188.4659 C.188.4965 D.188.4569