I have a problem for a written assignment in my calc 2 class involving the volume of a cylindrical glass. A cylindrical drinking glass 10 in tall and 4 in in diameter is filled with water, and then tilted so that the water pours out until half the base is exposed. Write an integral to find the volume of the water remaining in the glass. I know that the initial volume is going to be 40pi in3, but I really don't know where to go from there. I have a feeling that it might have something to do with related rates. However, the fact that I have to set up an integral makes me doubt that initial hunch. Thanks in advanced for any help.