[tex]A = \pi r^{2}[/tex] is the equation used for determining area from radius. We're given diameter, so to get the radius simply divide by 2. 19/2 = 9.5.
[tex]A = (3.14)(9.5)^{2}[/tex], when solved, equals [tex]283.385 m^(2)[/tex]. After rounding to the nearest tenth, we get [tex]283.4 m^{2}[/tex]
