Question

PLEASE HELP!!!!

Answer 1

Answer:

d. 40

Step-by-step explanation:

The number of faces, edges and vertices is related by the following formula:

$V - E + F = 2$

In which V is the number of vertices, E is the number of edges and F is the number of faces.

In this question:

$F = 25, V = 17$

We want to find E. So

$V - E + F = 2$

$17 - E + 25 = 2$

$E = 42 - 2 = 40$

The correct answer is given by option D.