📅 NSB 2015🎓 HS🔄 Round 2#️⃣ Q17🌟 BONUS✍️ Short Answer
Four coplanar circles of radius r have their centers arranged to form the vertices of a square of side length 2r. What is the area of the region enclosed in the square, but not enclosed in any of the four circles?
✔️Answer:4r^2 – πr^2
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