Question

A cube has v vertices, e edges, and f faces. What is the value of f × v – e?

Answer 1

A cube normally has 8 vertices, 12 edges, and 6 faces so therefore:
\[f\times v-e\]
\[\eqalign{
&f=6 \\
&v=8 \\
&e=12 \\
}\]
So therefore:
\[f\times v-e=6\times8-12=48-12=36\]

Answer 2

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