Okay, so you could solve it this way:
First, you could find the area of the square.
Formula: (Width*Length)
Since all sides of a square are the same, we just do 14*14 which equals 196
Next, you find the area of the circle.
Formula: (sorry the order is weird)
[tex]r^{2} \pi[/tex]
So the diameter is 14, to find the radius of the circle, we divide by 2 which is 7.
so we get 49pi.
Now to find the left over area, we SUBTRACT.
Square area = 196
Circle area = 49pi
196-49pi=42.14
