Set up an integral that can be used to calculate the volume of the solid obtained by revolving the region defined below about the
Notice that BOTH functions are in
But you do not have to switch the variables. The semi-circle shape should have been easy to recognize!
Visualize the solid that will be generated after rotating this flag about the y-axis. It will look a bit like a donut.
Since the resultant solid has a hole in the center, use the Washer Method:
Remember that the bounds are