Correction for the weight of The Sears Tower
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How heavy is 0.01332 megatonnes?
It's about one-fifteenth as heavy as The Sears Tower
The weight of The Sears Tower is about 0.20180 megatonnes.
(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 0.20180 megatonnes. The outer wall surface of the Tower is covered with black anodized aluminum panels which would total 110,000 sq. m (28 acres) if laid out together.