posted by Kati .
A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a shadow that is 0.4 m long. How tall is the tree?
We will solve the problem by proportions.
Let the height of the tree be x, then
x/5 = 1/0.4
Cross-multiply to get
Thus the tree is 12.5 m. tall