To find the actual distance in real life based on the map scale, you can use the scale provided:
1 cm on the map represents 20 cm in real life.
If you measured a distance of 12 cm on the map, you would calculate the actual distance as follows:
\[ \text{Actual distance} = \text{Distance on map} \times \text{Scale factor} \]
\[ \text{Actual distance} = 12 , \text{cm} \times 20 , \text{cm/cm} \]
\[ \text{Actual distance} = 240 , \text{cm} \]
So the actual distance in real life is 240 cm.