Find the distance between Riverside and Milton if they are 12 cm apart on a map with a scale of 4 cm : 21 km.
To find the actual distance between Riverside and Milton, we need to convert the map distance to the actual distance using the scale.
Given that the scale is 4 cm : 21 km, we can set up the following proportion:
4 cm / 21 km = 12 cm / x km
Cross-multiplying:
4 cm * x km = 21 km * 12 cm
Simplifying:
4x = 252
Dividing both sides by 4:
x = 63
Therefore, the actual distance between Riverside and Milton is 63 km.