Question

use Euler's formula to find the missing number
vertices 22
edges 34
faces?
a.10
b.12
c.14
d.16

Answer 1

Euler's formula is given by:
 C + V = A + 2
 Where,
 C = Number of faces
 V = Number of vertices
 A = Number of edges
 Substituting values we have:
 C + 22 = 34 + 2
 Clearing C we have:
 C = 34 + 2-22
 C = 14
 Answer:
 c.14