单项选择题
按照图画出所示图形,求剖面线区域的面积。()
A.609.2406 B.609.2064 C.609.2046 D.609.2604
A.2402.5055 B.2402.0555 C.2402.5505 D.2402.5550
A.1029.7229 B.1029.2729 C.1029.7292 D.1029.7922