按照圖畫出所示圖形,求尺寸A的數(shù)值。()
A.76.6994
B.76.6949
C.76.6499
D.76.4996
按照圖畫出所示圖形,求剖面線區(qū)域的面積。()
A.15672.3682
B.15672.3268
C.15672.3286
D.15672.3826
按照圖畫出所示圖形,求剖面線區(qū)域的面積。()
A.2062.8335
B.2062.8331
C.2062.8353
D.2062.8313