The radii of the two end-discs of a container (as shown) are r, and r2 and its height is h. I drill two identical holes at the centers of the two end-discs to enable a draining constant k. We define T as the time needed to empty the fully filled container when it is placed as shown and Tz as the time needed to empty the fully filled (same liquid) container after you turn it upside down. Derive the formulas for Tq and Tz. In addition, if r = 0. derive the formulas again.