9514 1404 393
Answer:
21 square units
Explanation:
The formula for the area of a parallelogram is ...
A = bh
where h is the height measured perpendicular to the base.
Here, it is convenient to use the horizontal dimension as the height, and the vertical dimension as the base. The vertical bases are 3 units long and 7 units apart horizontally.
A = (3)(7) = 21 . . . . square units