- 4x² + 20+96, The region R in the first quadrant of the xy-plane is bounded by the curves y x = 0 and y = 0. A solid S is formed by rotating R about the y-axis: The (exact) volume of Sis:
- 4x² + 20+96, The region R in the first quadrant of the xy-plane is bounded by the curves y x = 0 and y = 0. A solid S is formed by rotating R about the y-axis: The (exact) volume of Sis: