Question

can you solve this sum please​

Answer 1

Answer:

Euler’s formula: F + V - E = 2

Where , F = Faces, V = Vertices and E = Edges

i) F + 6 - 12 = 2

F = 2 + 6

F = 8

ii) 5 + V - 9 = 2

V-4 = 2

V = 6

iii) 20 + 12 - E = 2

32 - E = 2

E = 30

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Answer 2

Answer:

$f + v - e = 2 \\ 10 + 4 - e = 2 \\ 14 - e = 2 \\ - e = 2 - 14 \\ e = 12 \\ you \: can \: solve \: the \: rest \: question \: by \: this \: method$

Answer 3

Answer:

$f + v - e = 2 \\ 10 + 4 - e = 2 \\ 14 - e = 2 \\ - e = 2 - 14 \\ e = 12 \\ you \: can \: solve \: the \: rest \: question \: by \: this \: method$

Answer 4

Answer:

$f + v - e = 2 \\ 10 + 4 - e = 2 \\ 14 - e = 2 \\ - e = 2 - 14 \\ e = 12 \\ you \: can \: solve \: the \: rest \: question \: by \: this \: method$