Answer:
36 units squared
Explanation:
Let's say that (1, 13) is point A, (7, 13) is B, (7, 1) is C, and (1, 1) is D. The distance from point A to point B is 6 units horizontally, which we now know is the base. The distance from point C to point D is 6 units vertically, so this must be the height of the shape. To find the area we multiply the base times the height (6 * 6). We get 36, so the area of this shape is 36 units squared.