Question

GIVING AWAY A MEDAL:
Use Euler’s Formula to find the missing number.
Faces: 19
Vertices: 11
Edges: ?
A) 29
B) 28
C) 27
D) 31

Answer 1

@iGreen Do you know what this one is?

Answer 2

No. I never heard of Euler's Formula.

Sorry.

Answer 3

Thanks anyways.

Answer 4

\(\large euler's ~~formula~~ (f+v-e=2)\)

Answer 5

Oh, well..

Given what @mathmath333 said:

I'm betting f = faces, v = vertices, and e = edges.

Answer 6

Yes.

Answer 7

Plug in what you know:

19 + 11 - e = 2

Add:

30 - e = 2

Subtract 30 to both sides:

-e = 32

Multiply -1 to both sides:

e = -32

Answer 8

Okay, I did something wrong..nevermind. xD

Answer 9

Lol, thats okay. You tried. I have absolutely no idea how to do these.

Answer 10

sry 28 lol

Answer 11

Thank you.