No, 56 is a multiple of 7 though.
11x11 is 121 a way to remember it is there is one number on the left one number on the right and they add up to be 2 numbers total
The area of the circle is
... A = (π/4)d² . . . . where d=10 in
The area of the square is
... A = d² . . . . . . . . where d=10 in
The amount of the square that is not in the circle is
... (1 -π/4)d² = 0.2146018d² ≈ 21.5 in² . . . for d=10 in
