is xy + yz + x a length, area, volume or none of these and why?
just got a bit confused as to what it would be :P
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Answers (3)
This is not easy to answer. Are x, y, z lengths? If so then xy + yz is the sum of two areas. However, the final x is just a length so can't really be addded to the areas as the sum has no meaning. That is unless the x is really x times 1 which is another length.
I don't see how it can be a volume.
Edit. As you say they are all lengths then my fist paragraph applies.
xy + yz + x makes no sense
Did you mean xy + yz + xz? This would be an area.
It's impossible to say from the information provided (unless this is a standard equation, but I don't recognize it). The only way this formula makes sense is if y has no units (that is, it's just a number, not a measurement of any sort), and the units of z and x are the same. In this case, the result would have the same units as z or x. So, if x is a length, it's a length; if x is an area, it's an area; if x is a volume, it's a volume.
volume