4 Scale 198 Page of Problem 3 (i) Compute the volume (by any method) of the solid obtained by revolving around the vertical line x = -0.1 the region between the graphs y = Vx and x = y for r, y _ 0, see Figure 2. Figure 2: A volume by revolution (ii) A particle moves along the r-aris such that the acceleration is given by a(t) = -3 cos(t) + to fort > 0. If the particle's velocity is 13 at t = 0, then what is the particle's velocity at t = 13