Which equation can be used to calculate the area of the shaded triangle in the figure below?

a rectangle is shown with a width of 6 ft and a length of 16 ft. there is a diagonal line through the rectangle, and the bottom half is shaded in grey.
(4 points)

2(16 × 6) = 192 square feet

2(16 + 6) = 44 square feet

1 over 2. (16 × 6) = 48 square feet

1 over 2. (6 + 16) = 11 square feet