SOLUTION: the scale of a map is 1:20000.Find the actual distance (in km) if the measurement on the map is 4cm

Question 807915: the scale of a map is 1:20000.Find the actual distance (in km) if the measurement on the map is 4cm
Found 2 solutions by josmiceli, MathLover1:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Set up the ratio:
cm/km
Multiply both sides by
cm
m
km

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

scale means that any measurement on the map is multiplied times in the distance represented
Thus; on the map will represent of distance on the ground
since , you have and since
you have
so, the actual distance is
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