4. A troupe of skydivers got hired to put on a show for some war veterans. The show organizers have asked the skydivers to use vintage replica round parachutes. The accountant needs to know the exact material cost to manufacture some new round parachutes, so he can determine if the show will be profitable after expenses. Given the formula A = r, find the area (A) of the parachute whose radius (r) is 6.6 x 100 ft. (Use 3.14 for ) A= x ft