Question

A tree casts a shadow that is 10 feet long. A woman who is 5 feet tall casts a shadow that is 4 feet long. Two similar triangles are created. How tall is the tree.

Answer 1

12.5m

Explanation:

We attack this by forming ratios

If the woman who is 5ft casts a 4ft long shadow, we have

5:4

x:10

cross multiply

4x = 50

x = 50/4

x = 12.5m