Hi everybody, didn't really know where to put this thread since it's physics using math, so I'm sorry if it's not in its appropriate place. My problem is: I need to compute the mass of oil in a cylindrical core put into a core holder.it's partially filled of oil. I didn't know how to numerically calculate it knowing that the porosity of the core is different of the outside annular's one. I'd be so thankful if u could help. PS: it's none of HW, but I need it in a project I'm working on.