问题:
如图,光源P在横杆AB的正上方,AB在灯光下的影子为CD,AB ∥CD,AB=2m,CD=6m,点P到CD的距离是2.7m,则AB与CD的距离为( )
A.0.9m
B.1.8m
C.2.4m
D.3m
如图,光源P在横杆AB的正上方,AB在灯光下的影子为CD,AB ∥CD,AB=2m,CD=6m,点P到CD的距离是2.7m,则AB与CD的距离为( )
A.0.9m | B.1.8m | C.2.4m | D.3m |
参考答案: