Afarmer has 300 ft of fencing to enclose a rectangular pen next to a barn and the barn itself will be used as one of the sides of the enclosed area. what is the maximum area that can be enclosed by the fencing? how many ft squared?

The area of the pen will be equal to 10000 sq ft

Step-by-step explanation:

This is because technically a square is rectangle, and because one side is covered by the barn, and assuming the barn is 100 ft long, each side of the fence is 100 ft long, so the area is equal to

or

which is 10000 due to the fact that there are a total of 4 zero's

i would need to see the dot plot : )