Answer: i think is A or B
Step-by-step explanation:

The area of a circle is

The radius is half the diameter, so we have

Only numbers that are perfect squares have an odd number of positive factors. all other types of numbers have an even number. so if negative factors are included, then all numbers have an even number of factors.
Let, the width = x
Then,Length = 2x
Now, Area = l * w
A = (2x)(x)
128 = 2x²
x² = 128/2
x = √64
x = 8
In short, Your Answer would be 8 Feet
Hope this helps!