A piece for a game board is shaped like a triangular prism. the piece is 18mm long. the base of the piece is an equilateral triangle with 10mm sides and a height of 9mm. find the surface area of the game piece. please help

Area of the triangle, 

                      A = bh / 2 = (10 mm)(9 mm) / 2 = 45 mm²

Since there are 2 triangles, their total area is 90 mm².

Then, the area of the sides are,

           3A = (3)(10 mm)(18 mm) = 540 mm²

The total area is equal to 585 mm².

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Step-by-step explanation:Make me branlist pls need one more

answer: h

step-by-step explanation:

1. 3.4/4

2. 0.8/7

3. 0.5 x 3

4. 0.9 x 6

5. 10.8

6. 2.35

7. 0.567

8. 9.35

9. 0.02

10. 0.06

11. 0.16

12. 0.42

13. 0.63

14. 5.6

15. 8.1

16. 9.9

17. 0.28

18. 0.48

19. 0.27

20. 0.49

21. 0.45

22. 0.72

23. 0.9

24. 0.88

25. 0.75

26. 0.16

27. 0.328

28. 0.495

29. 0.72

30. 1.068