Find the Volume of the Solid Generated by Revolving the Region

question 6

Short Answer

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the indicated axis. $$y = \frac { e ^ { x / 2 } } { \left( 1 + e ^ { x } \right) ^ { 5 / 2 } } , \quad y = 0 , \quad x = 0 , x = 4 \text {; the } x \text {-axis }$$