



 
Hi, I drew a diagram, roughly to scale, of a square of side length 1500 m and overlaid it by a circle of radius 850 m. Part of the square is outside the circle, shaded blue, and part of the circle is outside the square, shaded green. The area of the square is \[1500 \times 1500 = 2,250,000 \mbox{ square metres} \] and the circle is \[ \pi \times 850^2 = 2,269,800.69 \mbox{ square metres.}\] Since the area of the circle is larger than the area of the square the sum of the areas of the green parts of the diagram is larger than the sum of the areas of the parts of the diagram shaded blue. I hope this helps,  


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