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The shape of a glass (tumbler) (see figure) is usually in the form of

(A) a cone                                                       (B) frustum of a cone

(C) a cylinder                                                  (D) a sphere

Answers (1)

Answer (B) frustum of a cone


A cone – A cone is a three-dimensional geometrical shape that tapers smoothly from a flat base to a point called the apex or vertex.

            (B) Frustum of a cone – It is a portion of a solid that lies between one or two parallel planes cutting it.

            (C) A cylinder – A cylinder is a three dimensional solid that has two parallel based joined by a curved surface at a fixed distance.

            (D) A sphere – The set of all points in three-dimensional space lying the same distance from a given point.  

            Hence the shape of glass is usually in the form of the frustum of a cone.

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