The polynomial with the lowest degree that has the given solutions is a multiplication of the monomials (x-solution). And with complex roots, we always have a number and its conjugate
So first, find the area of the square. 12x12= 144inches^2 Then find the area of the circle. To do this we use pi x r^2. The radius of the circle is 6 inches. Pi x 6^2 = 113.04inches^2. 144 - 113.04 = 30.6, so your answer is 30.6 inches^2
The circles circumference is worked out by using pi x d. The diameter is 12 inches, so 3.14x12 = 37.68 inches. The squares perimeter is 12 x 4 = 48 inches. If you round up the circumference of the circle to the nearest integer, you get 38 inches. The ratio would therefore be, 38:48, which can be rounded down to 19:24 :)