A person by the name of Huebscher developed a relationship between the equivalent size of round ducts (in air-conditioning applications) and the rectangular ducts according to:
where
D = diameter of equivalent circular duct (mm)
a = dimension of one side of the rectangular duct (mm)
b = the other dimension of the rectangular duct (mm)
Using Excel, create a table that shows the relationship between the circular and
the rectangular duct, similar to the one shown in the accompanying table.
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