A = Area
V = Volume
l = length
w = width
h = height
A rectangle is 2D and has AREA not volume. A = (l)(w)
A rectangular prism is 3D and has VOLUME. V = (l)(w)(h)
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The volume of a rectangle is 0. It is a 2-dimensional object and so has no volume.
Volume = Length *Breadth*Height
Density = Mass/Volume So for a rectangle, find its mass, then its volume (using length x height x depth).
Volume divided by Height.
rectangle and octahedron