Can’t wait to talk about geometric probability with my kids

Saw this great video from Richard Rusczyk and Art of Problem Solving just now. It shows the solution to problem #25 from today’s AMC 10a. For me, geometric probability is one of the most magical subjects in math. The problem seems almost intractable, but then – poof – area of a square + the area of a circle and you’ve got the solution!

 

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