Hopefully I'm understanding this question correctly. I assume you mean a heating or air duct where, if round, is like a cylinder.
The volume of a cylinder is equal to (pi)r2h, where pi = 3.142; r =...
With the available information all that can be said is that the area of the second square will be less than that of the first. The question cannot be answered in any meaningful way without further...
Well to be honest guys I'm NT 100% sure but this is how I think you do it.... Double check about 3 times I would say... Anyway... Say if it was 9 x 7 the 9 down te length side and the 7 across the...