this may not be the right section so sorry if its in the wrong place. I've tried researching this but I find it's pretty hard to get information on obscure subjects. I talked to my teachers at college but they only teach A level so they didn't have a clue. I've found some http://farside.ph.utexas.edu/teaching/316/lectures/node4.html" [Broken] on vector areas on the internet but it's kind of confusing, could someone help me out and show me how to calculate it for a 3D object. I need it for part of a much larger and more complicated set of physics equations, I've spent the last two months putting it all together and this is the last piece of the puzzle. the object I need to calculate the vector area of is an air core solenoid, ill attach a picture of the general shape.