The philologists who had the chance to study and interpret the ancient Egyptian mathematical papyri had invented the term Hekat or Heqat, referring to such hieratic ideogram in some mathematical problems, and said it meant unit of volume.
If one intends to reckon the volume of any form, he should mention its third dimension.
Non of the problems that they said it speak about reckoning a volume of cylinders or cubes includes the ancient Egyptian word that means "height".
Some keep writing articles or books, on those fake ideas concerning the so-called Hekat; they bluff themselves and the others, and underestimate the inherent values in the ancient Egyptian hieratic mathematical texts.
In short, what has no height (third dimension) has no volume.
If you found the ancient Egyptian word that means Height in any mathematical papyrus, you will notice what I mean. Then and only then you will stop talking about the fictitious word Hekat and its "modern created" volume that has no height in the hieratic mathematical texts.