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A three dimensional object cannot be built from two dimensional objects?
That's more of a statement than a question. It's also a false statement. You can build a three dimensional object from two dimensional objects, if you have an infinite number of them.
A three-dimensional object may be built from two-dimensional objects?
true You can imagine any 3 dimensional shape as stacking the 2 dimensional version of that shape on top of each other. Actually, it is false. You can imagine a 3-d object being made up of a lot of 2-d objects stacked on top of one another. But remember that, by definition, a 2-d object has no thickness (or, in this case, height). Height of one 2-d obect = 0 so height of n such objects = n*0 = 0 So a stack, no matter how many objects you use, will remain 0. And so you are not building up a 3-d object. Alternatively, you could imagine a cube (3-d) being built up from 6 square faces (2-d). Except that this is just the shell of the 3-d object, not the 3-d object itself.
How many 1970 440 roadrunners were built?
[object Object]
What is a replica of an original object that is too large or too small to be built at actual size?
a model
Is the area of stair hall included in the area of a floor?
not really because they are 2 diffrent objects floor and stair hall is only BUILT on the floor witch makes it no.
