Compare the following lengths and fill in the blanks.
The is the shortest. (Enter helicopter, fighter plane, or airplane.)
The is the longest. (Enter helicopter, fighter plane, or airplane.)
The helicopter is shorter than the airplane by m.
The airplane is longer than the fighter plane by m.
The helicopter is the shortest.
The airplane is the longest.
Difference between the helicopter and the airplane:
Difference between the airplane and the fighter plane: