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Area of ΔCDE = 1/2 * 6 * 6 = 18 cm²

Area of square ABCD = 6 * 6 = 36 cm²

Area of circle = 3.14 * 3² =  28.26 cm²

Area of difference between circle and square = 36 – 28.26 = 7.74 cm²

Area of shaded area = square ABCD – ΔCDE – Area of difference between circle and square/2

= 36 – 18 – 7.74/2 = 4.13 cm²

Number of tiles = 600 * 600 /( 6 * 6)= 10000

Total shaded area = 10000 * 4.13 = 41300 cm²

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