a solid figure
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A rectangle is a 2-dimensional object. It cannot have length and breadth AND height. If three dimensions are given, then two of them (eg breadth and height) must stand for the same thing.
A three dimensional solid figure looks like a cube or a prism. Pyramids are three dimensional solid figures as well.
A house is actually three dimensional. This means that it has measurements of length width and also height. The length is how long your house is. The width is how wide your house is. The height is how high your house is. Every house varys in the dimensions.
Because the base of a cone is round, it is the only three dimensional figure with only one vertex.
Area, A, is two dimensional so has a width and length, say. You have three dimensions. A three-dimensional entity has a width, length, and height, represented by V (for volume). The size of your volume entity is 5 x 4 x 8 inches = 160 cubic inches.