Answer :
First convert 5 km into m so the units match up
That way you know the stream goes 5,000 m horizontally and 200 m vertically
Then I think you just do rise/run which would be 0.04 m
That way you know the stream goes 5,000 m horizontally and 200 m vertically
Then I think you just do rise/run which would be 0.04 m