A:What
B:This
C:What's
如图,已知△ABC的面积S△ABC=1.在图(1)中,若AA1AB=BB1BC=CC1CA=12, 则S△A1B1C1=14;在图(2)中,若AA2AB=BB2BC=CC2CA=13, 则S△A2B2C2=13;在图(3)中,若AA3AB=BB3BC=CC3CA=14, 则S△A3B3C3=716;按此规律,若AA4AB=BB4BC=CC4CA=15, 则S△A4B4C4= 若AA8AB=BB8BC=CC8CA=19, 则S△A8B8C8= .
请解答下列问题: