Answer:
139.1 ft² (nearest tenth)
Explanation:
Formula
- Area of a rectangle = width × length
- Area of a quarter circle = ¹/₄πr² (where r is the radius)
The two areas of the lawn that are watered by the sprinklers are quarter circles with radius equal to the width of the lawn (18 foot).
Therefore, the area of the section of the lawn that is not watered is the area of the rectangle minus the two quarter circles.
Therefore, the area of the section of lawn that is not watered by either sprinkler is 139.1 ft² (nearest tenth).