speed = distance / time
acceleration = [ speed ] / time = [ distance / time ] / time = distance / time^{2}
force = mass * [ acceleration ] = mass * [ distance / time^{2} ] = mass * distance / time^{2}
work = [ force] * distance = [ mass * distance / time^{2} ] * distance = mass * distance^{2} / time^{2}
power = [ work ] / time = [ mass * distance^{2} / time^{2} ] / time = mass * distance^{2} / time^{3}
Mass is measured in kilograms.
Distance is measured in meters.
Time is measured in seconds.
power = mass * distance^{2} / time^{3} = mass * distance^{2} * time^{3} = kg * m^{2} * s^{3}
power = kg * m^{2} * s^{3}
Check: https://en.wikipedia.org/wiki/Watt (in the box on the right it has the SI base units representation)
Euclid gave us a definition of a "rectangular parallelogram" – a "rightangled parallelogram" which we now call a "rectangle" – that does not exclude squares, and this was written around 300 BC (much longer than 55 years ago!).
See:_  Elements Book II  _and_  Elements Book II Definitions 1 and 2  
And:  Elements Book I  and  Elements Book I Proposition 34  (where he talks about a parallelogram) 
 
