To find the length of the rectangle, you can use the formula for the area of a rectangle:
\[ \text{Area} = \text{Length} \times \text{Width} \]
Given that the area is 57,600 square feet and the width is 160 feet, you can rearrange the formula to solve for the length:
\[ \text{Length} = \frac{\text{Area}}{\text{Width}} \]
Plugging in the values:
\[ \text{Length} = \frac{57,600 , \text{ft}^2}{160 , \text{ft}} = 360 , \text{ft} \]
Thus, the length of the rectangle is 360 feet.