Correction for the weight of The Sears Tower
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How heavy is 24,000,000 kilograms?
It's about one-tenth as heavy as The Sears Tower
The weight of The Sears Tower is about 201,800,000 kilograms.
(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 201,800,000 kilograms. 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.