AC 5.
AB BC12
. ····························································································· (10分) AC5
在Rt△ABG中,AB 4,
16
AG .
5
在Rt△BPG中, BPA 60°,
BG
PG
BG12.
tan60°535
16
5 AP AG PG
S△APB
11 1612AP BG . ································· (12分) 22 5 5