A region R1 in the first quadrant is bounded by the graph of y=x and the x-axis for 0≤x≤4. The region is revolved about the x-axis to generate a solid.
(a) Set up, but do not evaluate, the definite integral that gives the volume of the solid generated by revolving R1 about the x-axis.
(b) Evaluate the integral in part (a) to obtain the exact volume of the solid.
(c) Using correct units of measure, interpret the numerical answer from part (b) in the context of volume.