How big are balloons?

The most popular sport balloon is
approximately 55 feet wide (diameter)
and 70 feet high, which is about the same
as a 7-story building. It has 1,075 square
yards of nylon fabric in its envelope (or one-fifth
of an acre in surface area), more than 3 miles
of thread, and almost one-half mile of nylon
webbing (used for reinforcing). Its 77,550
cubic foot air capacity displaces almost 3 tons
of air and could hold 62,279 bushels of apples
or 579,340 gallons of water. These sport balloons
can carry 3 to 4 people.

Back Next