sq. units doesn’t rule out non-integer lengths. Not in the least.
Ok. I can buy that, but I can’t seem to find two non-integers where L*W equals 12 and 2L + 2W equals any of the other choices
“sq. units doesn’t (sic) rule out non-integer lengths. Not in the least.”
They don’t in all cases, but they do in this problem because it specifically states 12 sq. units.