I'm struggling in the process of doing these questions to get the answers as the book provided (I wrote it on the top of the marked questions). Please help me with the questions 5, 7, 9, and 11. Thank you so much!

In Exercises 9 - 12, a region of the Cartesian plane is shaded. Use the Disk/Washer Method to find the volume of the solid of revolution formed by revolving the region about the y- axis. 9 TT / 2 units 3 y = 3-x 2 9 . - 2 -1 1 N 10 y = 5x 10. 5 X 0.5 1 1.5 2 71 2- 2 TC units H 1 1. y = COS X 0.5 0.5 1 1.5 (Hint: Integration By Parts will be necessary, twice. First let u = arccos' x, then let u = arccos x.)Problems In Exercises 5 - 8, a region of the Cartesian plane is shaded. Use the Disk/Washer Method to find the volume of the solid of revolution formed by revolving the region about the x- axis. 48 TLV3 /5 units y = 3 -x 5 . - 2 -1 1 10 y = 5x 6. 5 0.5 X 1 1.5 2 TV /4 units 7. 0.5 y = COs x 0.5 1 X 1.5