UnGoogleable Question - Oct 19, 2015 - Approximating Circle Area

I started the "Circles and Trigonometry" unit on my Applied Math class this week, so to get them triggering on some prior circles knowledge form Geometry, I threw up some basic circle area questions for the Do Now. I expected they would be able to do them, but my goal for the activity was mostly just to get them thinking about radii, diameters, and angles. This first photo was as difficult

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