Question

how solve Euler,s formula

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Answer 1

It is written F + V = E + 2, where F is the number of faces, V the number of vertices, and E the number of edges. A cube, for example, has 6 faces, 8 vertices, and 12 edges and satisfies this formula.

Answer 2

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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