The description of the Light spell in D&D 5e says:
You touch one object that is no larger than 10 feet in any dimension. Until the spell ends, the object sheds bright light in a 20-foot radius and dim light for an additional 20 feet. (…)
Can I cast the Light cantrip on an 11-foot pole?
On one hand, 11 is greater than 10. This would suggest that the answer to my question is "no".
On the other hand, I could put an 11-foot pole in a 10×10×10-foot box. This would suggest that the answer is "yes".
I don't expect that the success of an adventure will hinge on the answer to this question any time soon, but I would like to understand how dimensions are supposed to work.