Using the formula given: d = √(3h/2)
We simply substitute the given values of h into the equation and compare the results.
For Wyatt where h = 120:
d = √(3(120)/2)
d = 13.42 miles
For Shawn where h = 270:
d = √(3(270)/2)
d = 20.12 miles
Since the question asks for how much farther can Shawn see, we subtract the results:
20.12 - 13.42 = 6.7
Therefore, Shawn can see 6.7 miles farther.