Can someone please explain it to me ASAP?!!! This is Volume by Shells

the washer method and the shell method to find the volume of the solid that is generated when the region in the first quadrant bounded by y = x2, y = 16, and x = 0 is revolved about the line x = 6. . . .. . he integral that gives the volume of the solid as a single integral if possible using the disk/washer method. Select the correct choice below and fill in any answer boxes within your choice. xact answers.) () dx 0