A helicopter is hovering over a crowd of people watching a standoﬀ in a parking garage
across the street. Bobby notices the shadow of the helicopter is lagging approximately 50
m behind a point directly below the helicopter. If Bobby is 2 m tall and casts a shadow of
1.6 m at this time, how high up is the helicopter?

Question

A helicopter is hovering over a crowd of people watching a standoﬀ in a parking garage 
across the street. Bobby notices the shadow of the helicopter is lagging approximately 50 
m behind a point directly below the helicopter. If Bobby is 2 m tall and casts a shadow of 
1.6 m at this time, how high up is the helicopter?

anonymous · Answer

|dw:1365545800069:dw| does that diagram help you?