TRON Posted February 17, 2014 Report Share Posted February 17, 2014 Area of a cylinder : 2 π r2 + 2 π r h Quote Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s Link to comment Share on other sites More sharing options...
01 S-10 Posted February 17, 2014 Report Share Posted February 17, 2014 (edited) 4 inch port= 2x2x3.14 12.56 6 inch port=3x3x3.14 28.26 Edited February 17, 2014 by 01 S-10 Quote TDH FTW !!! Link to comment Share on other sites More sharing options...
Stephen Raab Posted February 17, 2014 Author Report Share Posted February 17, 2014 hmmm so using that equation, if i use a 6" port it would only need to be roughly 2.5" long is this correct? Quote Link to comment Share on other sites More sharing options...
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