A building designed by an architect has a roof top in the form of a structure that has a vertex, one circular base and a curved surface. It corresponds to the which of the following three dimensional figure?
A
Cube
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B
Sphere
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C
Cone
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D
Cylinder
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Solution
The correct option is B Cone
A cube has 8 vertices and no curved surface.
A sphere has a curved surface only, no vertices.
A cylinder has a circular base as well as a curved surface but no vertex.
Hence, the building designed by the architect is a cone, having a vertex, a circular base and a curved surface.