7. The model below is used to show the relationship between the side lengths of a right triangle. Which describes the square that could be connected to side b of the triangle to correctly complete the model?
841
ft 2
С
b
A. A square with side lengths of 400 feet.
B. A square with side lengths of 100 feet.
C. A square with side lengths of 50 feet.
D. A square with side lengths of 20 feet.
a
441
ft.2