'Twas the night before Christmas and throughout the net, Not a question was posed, at least---not yet. When what to my horror I suddenly realized: One present was not wrapped, a present most prized. For a juggler of the future, three balls all the same. But how best to foil-wrap, within a tight frame? > ***Q1***. What is the smallest square that can wrap three unit-radius balls? To *wrap* means to completely cover their convex hull. I mention "foil" above because one may want to crinkle the wrapping over sphere caps, analogous to how [Mozartkugeln](https://en.wikipedia.org/wiki/Mozartkugel) are wrapped.<sup>1</sup> <hr /> [![Balls3][1]][1] <hr /> Likely easier is this question, which may only require rough bounds: > ***Q2***. Which of the two configurations shown above is easier to wrap, easier in the sense that a smaller square suffices? <hr /> <sup>1</sup> The square of diagonal $2 \pi$ is the smallest square that wraps a unit-radius sphere. Demaine, Erik D., Martin L. Demaine, John Iacono, and Stefan Langerman. "Wrapping spheres with flat paper." *Computational Geometry* 42, no. 8 (2009): 748-757. [Journal link](https://www.sciencedirect.com/science/article/pii/S0925772109000182). [1]: https://i.sstatic.net/dGfCz.jpg