1. (10 pts) [Hint: use disk method, see examples]
2. (10 pts)
3. (10 pts)
4. (10 pts)
5. (10 pts)
6. (10 pts)
7. (10 pts)
8. (5 pts)
9. (5 pts)
10. (5 pts)
11. (5 pts)
12. (10 pts)
1. (10 pts) [Hint: use disk method, see examples]
2. (10 pts)
3. (10 pts)
4. (10 pts)
5. (10 pts)
6. (10 pts)
7. (10 pts)
8. (5 pts)
9. (5 pts)
10. (5 pts)
11. (5 pts)
12. (10 pts)





