On Earth, if an object is dropped from a height of $\displaystyle {h}$ feet, the time in seconds it will take to reach the ground is found by evaluating the expression $\displaystyle \frac{\sqrt{{{h}}}}{{4}}$.
A helicopter drops a rescue package from a height of $\displaystyle {257}$ feet. Estimate how many seconds does it take for the package to reach the ground? Round your answer to two decimal places.