I need someone help . I got some questions that I do not know. Can someone help me to solve it ?
Here are my questions.
1.The distance between two features on the ground is 5 km. If these two features are apart on a map for 3.5cm, what is the approximate scale of the map?
2. The length of a bridge on a map with the scale of 1:2,500,000 is 0.5 cm. What is the actual length of this bridge on the ground?
- ?Lv 46 年前最愛解答
1. Approximate scale of the map
= 3.5 cm : 5 km
= 3.5 cm / 3.5 : 5 km / 3.5
= 1 cm : 1.42857 km
= 1 cm : 1428.57 m
= 1 cm : 142857 cm
2. Actual length of this bridge on the ground = 0.5 cm X 2500000
= 1250000 cm
= 12500 m
= 12.5 km