Write the advantages and disadvantages of a bar scale ​

An advantage of the number scale is that you only have to measure one distance (you don't have to measure the length of one bar segment) and our calculations are usually fairly simple as a result. A disadvantage to using the bar scale is that you have to measure the length of one segment and measure the distance on the map, and your calculations can be more complicated because you have to calculate how many segments fit into the distance measured on the map.

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