If a 3D solid has 8 faces and 8 vertices, find the number of edges in it.

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Solution

The correct option is B 14
Faces (F) = 8
Vertices (V) = 8
Using Euler’s formula,
$F + V - E = 2$
$8 + 8 - E = 2$
$16 - E = 2$
$E = 16 - 2$
$\Rightarrow E = 14$
Therefore, there are 14 edges in a polyhedron.

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