Concept
Must Spatial
Quantitative Problem Solving in Natural Resources / Geometry and Geography
"When converting lengths, the conversion factor is used once; when converting areas, it must be squared; and when converting volumes, it must be cubed. This follows from the number of spatial dimensions represented by the quantity. Writing units throughout the calculation makes it possible to verify that the final units are meaningful and prevents the common mistake of using a length conversion factor for an area."
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