Cut the largest circle on a square iron sheet 12 cm long on one side, and the area to be cut is______ Square centimeter

Cut the largest circle on a square iron sheet 12 cm long on one side, and the area to be cut is______ Square centimeter

12 × 12-3.14 × (12 △ 2) 2, = 144-113.04, = 30.96 (square centimeter). Answer: the area cut is 30.96 square centimeter