4. Let R be the closed region between the graphs of y = 2"; and y = 2.1: on the interval [0, 1]. Find the volume V of the solid obtained by revolving R about the y- axis. (Same graph as for Problem3) 5. Find the length of are on the graph of f {x} = 2x3\" 3 from x21 to 1:24 6. Find the area of the surface generated by revolving about the x-axis the curve f(.r) = if on [0,2]. 7. Fill in the values off10:3} and (Jr-1T9?) for :t: = 1, 2, 3. Provide detail to support your answers. WW) I---_ I---_ I---_