To determine the height, we will use the formula below;
where A is the area of the of the rectangle
b is the base
h is the height
From the question,
A=120 b=8
substitute the values into the above and solve for h
Divide both-side of the equation by 8
The height is 15 feet
The primeter = 2b + 2h
=2(8) + 2(15)
= 16 + 30
= 46 feet