A solid has 12 vertices and 30 edges. How many faces does it have?
A. 22
B. 24
C. 26
D. 20
Answer: Option D
Solution (By Examveda Team)
In a solid by Euler's formulaFaces + Vertices - 2 = Edges
⇒ Faces + 12 - 2 = 30
⇒ Faces = 30 - 10 = 20
This Question Belongs to Arithmetic Ability >> Mensuration 3D
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