We are told that a rotating sprinkler sprays water at a radius of 11 feet. Then, the watered area is a circle with a radius of 11 feet.
We want to find the area of of the lawn that is watered. To do so, we need to find the area of the circle. Recall that the area A of a circle equals the product of π and the square of its radius r.
A = π r^2
In this case, r= 11. Let's calculate the area using this information. Remember, we are asked to use 3.14 for π.
