Answer:
24
Step-by-step explanation:
Well if the shadow of the tree is 12 feet, and we need to find the length of the tree, here is the steps I took.
1. We know that a person that is 6 feet tall has a shadow of 3 feet tall, so divide 6 by 3=2.
2. We now know that the shadow is 1/2 the size as the person, so we do 12 x 2=24, for how long the tree is.