按照圖畫出所示圖形,求剖面線區(qū)域的面積。()
A.2015.6625 B.2015.6256 C.2015.6265 D.2015.6652
A.2210.2884 B.2210.2487 C.2210.2578 D.2210.2874
A.715.3734 B.715.3374 C.715.3743 D.715.3437