按照圖畫出所示圖形,求剖面線區(qū)域的面積。()
A.2494.5075
B.2494.0557
C.2494.0575
D.2494.0755
按照圖畫出所示圖形,求剖面線區(qū)域的面積。()
A.1743.9013
B.1743.9010
C.1743.9031
D.1743.9103
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