Port Conversion
Formula: D = Π x Radius x Radius
First Step: Measure the D of the circle port and caculate the R.
Second Step: Multiply R x R x Π = A
Third Step: A = W x H (NOTE: W & H can be any measurement as long as the end result = A of the Second Step.
D = Diameter
Π = (Pi)3.14
R = Radius
A = Area
H = Height
W = Width
