A farm uses a circular system to water the crops. The arm on the system (the radius) is 400 meters long. What area of land can it water? Use 3.14 to approximate pi.
To answer this question you would need to know the formula for the area of a circle, [tex] \pi r^{2} [/tex]. You would start by squaring 400, getting 160,000. You would then multiply 160,000 by 3.14, getting 502,400 meters squared as your answer.
