Understanding the ratio of the map of the map Percent help you calculate the actual distance. So to choose the right type of vehicle for your map to explore the destination. If you walk, you should select the type of map scale of 1: 25,000. If you drive, so choose one that has a ratio of 1: 190,000. The method of calculating the actual distance: after determining its way from point to point, using a ruler to measure the distance between these two points roughly and then taken data rate multiplied by the number of maps to find out the actual distance to go.
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