Answer
0.02km < 3000 cm < 50 m
Step-by-step explanation
The key to arranging these is to express each of them in the same standard unit
0.02 km = (0.02)(1000) = 20 m
50 m = 50 m
3000 cm = (3000)(0.01) = 30 m
20 < 30 < 50
0.02km < 3000 cm < 50 m
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