Question

In the diagram, a building casts a 20-ft shadow and a flagpole casts a 7-ft shadow. If the flagpole is 12 ft tall, how high is the building? Round to the nearest tenth?

Answer 1

12 tall Flagpole 7 shadow Flagpole
-------------------- = -------------------------
x tall build 20 shadow build

7x = 240
x = 34.3