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You would use a tool to measure the lengths of the sides or radii of the area and then use a formula to convert the lengths into an area. The tool would depend on the size of the object and the precision required. The tool could be an electron microscope, or a ruler, or a telescope and in general there would be no difference between a tool used to measure in the metric system or the imperial system. As an example of an unusual tool to measure area... in certain types of chemistry, the chemist needs to measure the area under a peak on a graph, and the traditional way of doing that is to cut the peaks out of the graph and weigh it on an analytical balance. Assuming the paper is fairly consistent in terms of density, the ratio of the weights is the same as the ratio of the areas.
No, a metre stick is adequate, but a 12 inch or 30 cm ruler would be handier and possibly perfect.No, a metre stick is adequate, but a 12 inch or 30 cm ruler would be handier and possibly perfect.
If scoring tool is versatile to measure many different aspects concerned then scoring tool is a measure of ability.
The answer depends on what characteristic the tool is used to measure.
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