# The area of a rectangular duct

Online calculator to calculate the area of a rectangular duct. Simple calculator for calculating the area of a rectangular duct online

**Side А**

mm

**Side В**

mm

**Length**

mm

**Number**

**Consider seams**

Online calculator to calculate the area of a rectangular duct. Simple calculator for calculating the area of a rectangular duct online

mm

mm

mm

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Why I can’t get the answer

Good

nice