A polyhedron is a three-dimensional solid with flat faces. The formula for the number of edges in a polyhedron is E = F + V - 2, where E is the number of edges, F is the number of faces, and V is the number of vertices.
In this case, we are given that the polyhedron has 8 faces and 12 vertices. Substituting these values into the formula, we get:
E = 8 + 12 - 2
E = 18
Therefore, the polyhedron has 18 edges. The correct answer is (c).
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150 Mins English English150 Questions150 Marks150 Mins English English150 Questions150 Marks150 Mins EnglishThe volume of a right circular cylinder is 4851 cm³ and its curved surface area is 462 cm². If this cylinder is generated by rotating a rectangle about its length by 360°, what will be the perimeter (in cm) of this rectangle?
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