1. Use Euler’s formula to find the missing number.
Vertices: 15
Edges: 24
Faces: ?
A.9
B.10
C.11
D.12
Why are so many at Connexus cheating ??
THOSE ARE NOT THE CORRECT ANSWERS
To be given this problem, you obviously have to know the formula.
It will be in either your textbook or in your notes, if not
F + V = E + 2
It contains 3 unknowns, you are given 2 of them, so
just plug in and solve for F
I see the answer in the list of choices.
To use Euler's formula, we need to know the relationship between the number of vertices (V), edges (E), and faces (F) of a polyhedron. The formula states that V + F - E = 2.
In this case, we are given the number of vertices (V = 15) and edges (E = 24) but need to determine the number of faces (F). Let's substitute the given values into the formula and solve for F:
15 + F - 24 = 2
Add 24 to both sides of the equation:
15 + F = 26
Subtract 15 from both sides of the equation:
F = 26 - 15
F = 11
Therefore, the missing number of faces is 11. Therefore, the correct answer is option C.
^their right
1. C
2. A
3. D
4. C
5. C
6. D
7. A
8. A
9. C
10. D
11. A
12. B
13. D
14. A
15. A
16. B
17. B
18. A
19. A
20. A
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