Question

george, who is 6.25 - feet tall, needs to know the height of a tree that he is going to cut down. he notices that he casts a 10 - foot shadow when the tree casts a 28 - foot shadow. the height of the tree is ______ feet tall. enter only the number.
the solution is

Explanation:

Step1: Set up proportion

Let $h$ be tree's height. $\frac{6.25}{10}=\frac{h}{28}$

Step2: Solve for $h$

$h = \frac{6.25\times28}{10}=17.5$

Answer:

17.5