Hi!
First find the area of the square.
To do this, find the length of one of the sides.
4 + 4 = 8
Since it's a square, all of the sides are 8.
8 x 8 = 64
Now find the area of the circle. (r² · π)
4² · π = 50.27
64 - 50.27 = 13.73
The answer is 13.73
Hope this helps! :)