## Basic College Mathematics (9th Edition)

Total Broadcast Area: 70,650 mi$^{2}$
We will treat the distance of the radio signal as the radius of a circle since it is the same in all directions. Area of a Circle: $A$ = $\pi$$r$$^{2}$ Therefore: $A$ = $\pi$(150 mi)$^{2}$ $A$ = 70,650 mi$^{2}$