Answer:
the first one 35/4 is the correct answer
1. ≈37.7
2. ≈47.75
3. ≈69.12
4. ≈31.42
5. =17.6
6. =48
7. =40
8. =8
9. =18
10. =14
11. ≈71.63
12. ≈23.88
13. =44
14. =32
15. ≈25.13
16. ≈34.56
17. ≈25.76
18. ≈43.98
19. =28.8
20. =28
