Answer:
A. The area of the gym
Explanation:
the statement give us:
length = x + 14
width= x- 20
we can write:
length = a
width = b
so we know:
perimeter of a rectangle= a+b
area of a rectangle =a*b
so we have:
area of a rectangle = (x+14)(x-20)
The area of the gym= (x+14)(x-20)