Question

A 20 - foot flagpole cast a 6 - foot shadow . How tail is a nearby building that cast a 30-foot shadow?

Answer 1

the nearby building would be 100ft tall

Answer 2

The building would be 100ft tall. You have to take 20/6 = ?/30 The difference between 6 and 30 is x5. Then all you have to do is 20x5 and you get 100ft.