Correction for the size of a Hot Air Balloon
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How big is 49,600 barrels?
It's about two-and-a-half times as big as a Hot Air Balloon
The size of a Hot Air Balloon is about 19,000 barrels.
(four-person capacity; envelope volume; average)
The average volume of a hot air balloon sufficient to lift four adults is 19,000 barrels. Typically made of nylon or dacron, a balloon envelope of this size typically weighs just 88 kg (190 lbs).