Answer:
The tree is 17.5 ft tall
Step-by-step explanation:
We can use ratios to solve
Shadow
-----------
height
28 8
------ = ------------
tree 5
Using cross products
28*5 = 8 * tree
140 = 8 * tree
divide each side by 8
140/8 = 8 *tree/ 8
17.5 = tree
