The range of the sprinkler will be the area of a circle with a radius of 40 feet.
area of circle = [tex]\pi r^{2}[/tex]
area of circle = [tex]\pi (40^{2})[/tex]
area of circle = [tex]1600\pi[/tex] = [tex]5026.55 ft^{2} approx.[/tex]
answer: [tex]5026.55 ft^{2} approx.[/tex]
