Question: An air duct with a regular hexagonal cross section and a side length of 0 . 5 m . What is the hydraulic diameter of

An air duct with a regular hexagonal cross section and a side length of 0.5 m . What is the hydraulic diameter of the duct which would be used for the calculation of the Reynolds number
1
1.414
1.73
0.866
An air duct with a regular hexagonal cross

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