sun 發問於 科學及數學地理學 · 6 年前

Help! 地理!

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?

1 個解答

評分
  • ?
    Lv 4
    6 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

    = 1:142857

    2. Actual length of this bridge on the ground = 0.5 cm X 2500000

    = 1250000 cm

    = 12500 m

    = 12.5 km

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