Square to Round size duct area Formula

Question: Click Here

Answer:

Round Side Size - Diameter 250 mm

Square Side Size- 300* 250

Suppose Length of the duct = 700 mm

No. of duct = 1 nos

Perimeter = [(250*3.141)/2 +300+250] = 942.625 mm

Area = (342.625 * 700 * 1)/1000000 = 0.239 Sqft