Answer:
Option 5. Insufficient information
Explanation:
Since the pool is in the form of a rectangle. Therefore opposite sides of the pool are equal.
Let the length of the pool be x and width of the pool is y feet.
Jan wants to swim across the diagonal of the pool therefore length of the diagonal will be = √x² + y²
perimeter of the pool is 16 feet
2(x + y) = 160 feet.
Now to get the length of the diagonal we should know at least one side of the pool.
Therefore information is insufficient for the calculation.
Option 5 is correct.