Question

⏺find the number of edges of a polyhedron having 20 faces and 12 vertices⏺

Answer 1

Euler's formula:

V - E + F = 2.

F=20

E=?

V=12

12-E+20=2

32-2=E

E=30

I hope it's good

Answer 2

$\bold{\boxed{Solution:}}$

According to the formula given by Euler.

F + V = E + 2

Where,

F = no. of faces

V = no. of vertices

E = no. of edges

So,

$\bold{\boxed{F + V = E + 2}}$

=> 20 + 12 = E + 2

=> 32 = E + 2

=> E = 32 - 2

=> E = 30

Therefore, there are 30 edges of a polyhedron having 20 faces and 12 vertices.

$\bold{\boxed{Thank you!!}}$