Answer:
C'mon....
You can do this. Simply pick four numbers that add up to 50 - such that two sides are the same and the other two sides are the same. To calculate the area, simply multiply length x width.
Step-by-step explanation:
Here's ONE example  ...
     20 ft.
5 Â Â Â Â Â Â Â Â Â Â Â 5 ft.
     20
L Â x W Â = A
20 x 5 = 100 sq. ft.