Chapter 14, Problem 34T

(a)

To determine

To calculate: The distance from the airplane window to the horizon when a person at an airplane window who is at the height of $28,000\text{ ft}$ and the distance D (in miles) from the horizon up to which the person sees who is at the height h (in feet) is approximated by the equation,

$D=\sqrt{2h}$

(b)

To determine

To calculate: The height at which airplane flies when Christina can see approximately $261\text{ miles}$ to the horizon from an airplane window and the distance D (in miles) from the horizon up to which the person sees who is at the height h (in feet) is approximated by the equation,

$D=\sqrt{2h}$