Is 647.740 chains as long as The Leaning Tower of Pisa?
It's about 250 times as tall as The Leaning Tower of Pisa
The height of The Leaning Tower of Pisa is about 2.80 chains.
(a.k.a. The Tower of Pisa, a.k.a. Torre pendente di Pisa) (Pisa, Italy) (height along center axis)
The Leaning Tower of Pisa stands 2.80 chains tall along the angle of its lean. In May of 2008, in an successful effort to stabilize the tower, 70 tonnes of earth were removed from the tower's base on the side opposite the lean.
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