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May 29, 2012Proof Without Words- The Circle1 minutePlayProve πR² using only beads and a ruler!...moreShareView all episodesBy Neptune Studios4.5470470 ratingsMay 29, 2012Proof Without Words- The Circle1 minutePlayProve πR² using only beads and a ruler!...moreMore shows like MinutePhysicsView allRadiolab43,837 ListenersMinuteEarth234 Listeners
May 29, 2012Proof Without Words- The Circle1 minutePlayProve πR² using only beads and a ruler!...more