text: when the circle with a 3 inch diameter....this is mean the circle with a 1.5 radius... \n\ntry to draw a circle with the square inside \nand line up the middle point of the circle with one corner of the square .\n\nafter that....\ndraw a vertical line from the middle point of the circle to the edge of the square....\n\nnow u can see the right tirangle in the square...\n\nlet half of the edge of square is x \nwhen u look at vertical line u drew earlier is x too\n\nso x^2 + x^2= 1.5\n        2x^2=1.5 \n         x=(3/4)^(1/2)\n \n and the area is 2x time 2x\n               =(2((3/4)^(1/2)))^2\n               =4(3/4)\n               =3 inch sq