Answer
v=5
Work Step by Step
We use Euler's formula:
$$F+V=E+2 \\ 5+V=2+8 \\V=5$$
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 11 - Surface Area and Volume - 11-1 Space Figures and Cross Sections - Practice and Problem-Solving Exercises - Page 692: 13
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