Question

A tree and a building stand side by side. The 5-foot tall tree cast a shadow of 12 feet. If the building is 80 feet tall, how long is it's shadow​

Answer 1

The shadow of the building = 192 ft.

Explanation:

∵ There is a proportional relation between the heights of the tree and the building and their shadows

∴ Height tree/height building = shadow tree/shadow building

`(5)/(80)=(12)/(x)`

x =
`((80)(12))/(5)`= 192 ft ⇒ x is the length of the shadow of the building