50" = 127cm
I get that you intended it as a joke, but the hivemind doesn't consider that when going to war.
$ units
...
You have: 50 * 12 * 12 inch^3
You want: dm^3
* 117.98686
/ 0.00847552
You have: 118 liter per (50 * 12 * 12 inch^3)
You want: hogshead per rod^3
* 533.44715
/ 0.0018745999
533.44 hogsheads to a cubed rod! Gadzooks!