The area of square A is 64 cm^{2}. The side
length of square B is the
side length of square A. The length of rectangle C is twice the side length of
square B. The width of rectangle C is 1/2 the side length of square B. What is
the difference between the area of square B and the area of rectangle C?

The difference between the area of the square C and
the area of rectangle B is ^{2}.