Concept explainers
To find: the area of the region and also draw the region.

Answer to Problem 69E
Explanation of Solution
Given:
A sprinkler on a golf green is set to spray water over a distance of 15 meters and to rotate through an angle of
Concept Used:
Area of sector of circle:
For a circle of radius r, the area A of a sector of the circle with central angle
The diagram that shows the region that can be irrigated with the sprinkler is given below:
So, the area of the region that can be irrigated with the sprinkler is actually the area of a sector of circle with radius
First convert the central angle from degree measure to radian measure.
Thus, the area of the region is,
Chapter 4 Solutions
EBK PRECALCULUS W/LIMITS
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