The number of dimensions, a solid has:
(A) 1
(B) 2
(C) 3
(D) 0
We know that a solid is a three-dimensional object having a definite shape, size and volume.
Three-dimensional means that to represent the shape, we need three axes (x, y, z).
The three dimensions of solids are generally known as length, width and height.
For example, a cuboid is a solid with three dimensions as shown:
In the case of a cube, we know that length = width = height.
Hence all are called side lengths.