Description of the calulation with units of measurement

## Units of measurement |
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A feature of RedCrab in groups such as length or area.
Mathematical expressions containing units of the same group and dimension can be added and subtracted Multiplication and division are possible without restriction if the calculations make sense. Examples |
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Make no sense |
ha ∙ ha |
hectare * hectare kilometre / kilometre |
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Correct is | 3km / 2 = 1.5 km | |||

3km + 2km = 5km | kilometre + kilometre | |||

3km + 245m = 3245m | kilometre + metre | |||

12m + 5yd = 18.123yd | metre + yard | |||

5yd + 12m = 16.572m | metre + yard | |||

4m ∙ 5m = 20m^{2} |
metre ∙ metre | |||

2ha + 950m^{2} = 20950m^{2} |
hectare + square metre | |||

650km / 5.5h = 118.18km/h | Kilometre / hour | |||

In results, the unit of the right operand is displayed.
You can enter a preferred unit of measurement that will be displayed instead. For more information, see The preferred unit of measurement is ignored if the result is incompatible. |
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Example | ||||

In the following example, the presetting for units is miles, the length is displayed in miles. |
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You can enable or disable the
For more information, see the description of |
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## Define your own unit of measurementNew units can be derived from the predefined units of measure Example dm = 0.1m |
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## Overload the name of a unit of measurementThe names of the units can be overloaded by assigning a value to them.
For example, if |
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