A pyramid is constructed on a cuboid. The figure has
Question
A pyramid is constructed on a cuboid. The figure hasOptions
A)
Twelve faces
B)
Sixteen edges
C)
Thirteen vertices
D)
Fifteen edges
The correct answer is B.
Explanation:
A cuboid has 12 edges and a square pyramid has 8 edges. Therefore, 12 + 8 = 20 edges in total. However, since the pyramid is constructed on the cuboid, the top of the cuboid is shared with the base of the pyramid resulting in 4 redundant edges. Subtract the four edges from the total of twenty to get 20 - 4 = 16 edges.
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Just count the number of lines to draw the image...you get 16...that's 16 edges
It has 9 faces and 9 vertices
A cuboid has 8 vertices (edges) and a rectangular based pyramid has 5 edges so all together is 8+5 = 13 edges
A cuboid has 12 edges and a square pyramid has 8 edges. Therefore, 12 + 8 = 20 edges in total. However, since the pyramid is constructed on the cuboid, the top of the cuboid is shared with the base of the pyramid resulting in 4 redundant edges. Subtract the four edges from the total of twenty to get 20 - 4 = 16 edges.
it is 9 edges from the fogure formed