Hi there!
To find the shaded area, we need to subtract the area of the circle from the area of the square. First, let's find the area of the square by multiplying 8 x 8, which gives us 64 or the area of the square. Next, we need to find the area of the circle. We know that the radius is 4 (half of the diameter, 8), so this will be easy. Plug it into the formula and solve: pi x 4^2 | 16pi. Now, all we have to do is subtract 16pi from 64. This leaves us with 13.735 for the shaded area (can round decimal to tenth = 13.7, hundredth = 13.74).
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!