It's a game a lot of us played as children -- and maybe even later in life: unspooling measuring tape to see how far it would extend before bending. But to engineer, this game was an inspiration, ...

But you can bend, fold, or tear the paper ... building, measure the height of your tower. • How much taller can you make the tower if you can add 20 centimeters (about 8 in.) of tape?