Choose an appropriate metric unit for the mass of concrete in a section of the sidewalk

Please help
math double test

6 answers

https://www.ck12.org/measurement/equivalent-metric-units-of-mass/lesson/Equivalent-Metric-Units-of-Mass-MSM6/
appropriate metric unit of mass for concrete in a section of sidewalk.
1. Kilogram (a)
2. Pineapple (b)
3. 3.2715 grams (b)
4. 627,532 mL (b)
5. 1.71 m (b)
6. 1,080^2 in (c)
7. 56 ft by 51 ft; 214 ft (c)
8. 496 ft^2 (a)
9. 6556 cm (d)
10. 53 cm (a)
11. 2162 miles (b)
12. 805 square meters
13. 410 cm (b)
14. (c)
15. 748m^2 (c)
16. 522 m^2 (c)
17. 270 m^3 (c)
18. 128 cm^2 (b)
19. 360 in^2 (b)
20. 104 f^2 (c)
21. 240 yards (c)
Is @Know me correct?
Im going to try out the answers and if their wrong Ill bust my head through a wall
@Know me we dont even have the same answers