Maps are drawn to a scale. Map scales are either given as a ratio, such as 1:2500, or given as a measured distance on the map representing an actual distance, such as 1 centimetre represents 5 kilometres.
1. What, in real life, is the distance from Ardley to Deephart? On the map, 2cm represents 5km.
The ruler measures 11cm. This is a multiple of 5.5 (from 2cm to 11cm). Multiply 5km by 5.5 = 27.5km
2. What is the straight-line distance from Ardley to Becansrop, if the distance is 10.75km in real life?
Calculate the multiplier for 5 to 10.75 (10.75 ÷ 5 = 2.15). Multiply 2 x 2.15 for a measurement of 4.3cm