13. Sam wants to find the height of a window in a
nearby building but it is a cloudy day with no
shadows. Sam puts a mirror on the ground
between himself and the building. He tilts it
toward him so that when he is standing up, he
sees the reflection of the window. The base of
the mirror is 1.22 meters from his feet and 7.32
meters from the base of the building. Sam's eye
is 1.82 meters above the ground. How high up
on the building is the window?