The blueprints for a police station show that one of the lamp posts has a motion detector on it, and that the equation (x+14)2+(
y−6)2=9 describes the boundary within which motion can be sensed. What is the greatest distance, in feet, a person could be from the lamp and be detected? 3 ft
Given: The blueprints for a police station show that one of the lamp posts has a motion detector on it, and that the equation describes the boundary within which motion can be sensed. :
→ which is a equation of a CIRCLE.
When we compare it to the standard form of equation of circle i.e. , we get the radius of the circle = 3
Consider the lamp post as the center of the area covered by the detector.
Then the greatest distance a person could be from the lamp and be detected = Radius of the circular area