clarification, please ... is the region to be rotated about in quads I and IV between , , and ... ???
Find the volume of solid of revolution generated by rotating the lamina contained between and , around the axis .
I understand the premise of this task but can't quite arrive at the correct expression for integration, which should lead me eventually to the answer of (if I should believe the textbook). Any ideas?
EDIT: Sorry, corrected the typo.