Question

find no of faces. if no of vertices =12 and no of edges =30​

Answer 1

Answer:

20

Step-by-step explanation:

Given that solid has 12 vertices and 30 edges

So,

Vertices of the solid =12

Edges of the solid=30

To find: number of faces

Euler's formula = F + V − E = 2

where F = face of the solid, V = vertices of the solid and E = edge of the solid

=> F + 12 -30 = 2

=> F + (-18) = 2

=> F - 18 = 2

=> F = 2 + 18

=> F = 20

So number of faces is 20

Answer 2

Answer:

F=20

Step-by-step explanation:

Euler's formula = F+V-E=2

F+12-30=2

F+(-18)=2

F= 2+18

F= 20