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Determine the volume obtained by rotating the area enclosed by y = 2e-T" , y =0, x =0, and x = 2 about the y-axis. V =Determine the volume obtained by rotating the area enclosed by y = =(1 - >) and y = 0 about the line x =-3. V = (?Determine the volume obtained by rotating the area enclosed by xy = 1, y = 0, x = 4, and x = 8 about the y-axis. V =