Question

A person who is 5 feet tall casts a shadow that is 4 feet long. at the same time, a flagpole casts a shadow that is 20 feet long. how tall is the flagpole?

Answer 1

Use ratio, the flagpole is 25 feet long

4:5
20:x

20/4 = 5
5×5 = 25 feet long

or

4:5
20:x

4x = 5*20
4x = 100
x= 25