按照圖畫出所示圖形,求剖面線區(qū)域的面積。()
A.1488.3266 B.1488.3606 C.1488.3066 D.1488.3166
A.3431.3777 B.3431.7737 C.3431.6663 D.3431.7773
A.3145.3510 B.3145.3015 C.3145.3105 D.3145.3051