If the map distance is 12cm and the scale of the map is 2cm to 1km or 1:50000 in representative fraction . Calculate the actual ground distance using both scales.

actual ground distance = 6 km

Explanation:

given data

scale of the map =  2 cm to 1 km

scale of the map =  1 : 50000

map distance =  12 cm

solution

we know map distance  i.e 12 cm

and we have given

2 cm = 1 km

it mean 1 cm will be

1 cm = 0.5 km

so we get here 12 cm distance that is

actual ground distance = 12 cm × 0.5 km  

actual ground distance = 6 km