Answer:
number of faces = 9
Step-by-step explanation:
Euler's formula for polyhedra states that
F + V - E = 2
F is the number of faces, V the nummber of vertices , E the number of edges.
given
V = 9 and E = 16 , then substituting these values into the formula
F + 9 - 16 = 2
F - 7 = 2 |( add 7 to both sides )
F = 9
The solid object has 9 faces.
