A solid has twelve more edges than faces. How many vertices does it have?​

Dear Student,
Let, 
Faces= F, Vertices= V and Edges= E
Here,
we have: E = F+12
Now, according to Euler's Formula:
​V-E+F=2
V-(F+12)+F=2
V-F-12+F=2
V-12=2
V=14

Regards.

 

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