Asynchronous, I think this is difficult if you’re trying to use that 3-Act style, mainly because of the open ended questions. If students are actually on at the same time, it’s more feasible because you’ve got control over pacing and can work in on-the-fly questions.
The measurement of an inch square might be difficult to work to get student spaghetti counts to be valid, but you could give a premade square with a drag point (maybe even randomize the initial position). You could use his example images to get the size of the square correct in relation to the radius. Students wouldn’t be able to measure the radius, but you could use a two points that makes a line segment that autocalculates it’s length (keeping in mind the side of your square is 1 unit).
Just spitballing.