Question

A solid has 12 vertices and 30 edges. How many faces does it have?
(a) o 22
(b) o 24
(c) o 26
(d) 0 20​

Answer 1

Answer:

this my answer F=12

Explanation:

Euler's formula ➡️➡️ V - E + F = 2

Where V stands for vertices

E for the edges and F for faces.

Coming back to your question

V = 12. E =30 F = ?

V - E + F = 2

12 - 30 + F = 2

-18 + F = 2

F = 2 + 18

F = 20

Answer - F = 20

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