Need help with question 2

2) Find the volume of the solid of revolution generated by rotating the region bounded by /(x) = 4x, y = x , x> 0 about the x - axis 3) Find the volume of the solid of revolution generated by rotating the region bounded by y = (x + 1) , x > 0, y = 16 0 about the y - axis Show all the steps of your work (all calculations!) and answer with a sentence: " The volume of the solid is ... cubic units"