The Great Pyramid of
Giza, built around 2550
B. C., has a square base
with a length of 756 feet,
and the distance from
the middle of any base
side to the top is 612 feet.
On September 11, 2001,
terrorists crashed planes
into the World Trade
Center Twin Towers. The
a first tower was a
rectangular prism with a
square base whose sides
were 208 feet long. The
tower was 1,368 feet tall.