Laura, who is 5 feet tall, wants to find the height of a tree on a cloudy day. She plans to use her walking stick to measure distances, although she does not know how long it is. First she
places a small mirror flat on the ground at a distance of 12 walking-stick-lengths from the tree.
Standing 0.8 walking-stick-lengths past the mirror, she can see the reflection of the top of the
tree in the mirror. Draw a picture and find the height of the tree in feet.