Size of the room
- Length = 12
- Width = 16
- Height = 10
On the middle of the ceiling, there is a light.
What is the maximum length between the light and the corner of the room?
the longest distance from the light is from it to one of the four lower/floor corner of the room , called D
the distance from the light to one corner of the ceiling = 1/2 sqrt( 12^2+16^2) = 10
D= sqrt (10^2+ height^2) = 10sqrt2