Answer:
17 feet
Why?
The formula for finding the area for a parallelogram is (B × H) .
Therefore, we can use the opposite, or inverse, to find our H.
221 = 13n (divide by 13.)
n = 17
Thusly, the height of the parallelogram is [tex]\boxed{{17\text{\:feet}}}.[/tex]
Hope this helps! :D