I found some more math in Lansing, MI. Right downtown, actually. The Lansing Art Gallery has a rather artsy front entrance. It looks like this.
See the green circle? See it? Looks like Pac Man. This one:
Closer inspection reveals that it is a green mosaic circle partially covered by a red mosaic rectangle. This grabbed my attention while I was strolling waiting to pick up a Cottage Inn pizza. I wondered how many green mosaic pieces were “underneath” the rectangle. I also wondered what percentage of the circle was covered up by the red rectangle.
Let me know if you get a solution. I’ll let you know when I get one.