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!
Answer:

Step-by-step explanation:
Raising a number to the 1/2 power is the same as square rooting it. Raising something to the 1/2 power is the same as asking for 2 equal factors that can be multiplied together to give you that number. For example,
is 3, but 9^1/2 is also 3.
Simplify by dividing the two by 14