Is 400,000 barleycorns as long as Burj Dubai?
It's about four times as tall as Burj Dubai
The height of Burj Dubai is about 97,800 barleycorns.
(formally Burj Khalifa, a.k.a. Dubai Tower, a.k.a. برج خليفة) (Dubai, UAE) (to roof)
Burj Khalifa, the tallest manmade structure in the world, stands 97,800 barleycorns to its roof. The tower also holds the current records for the world's highest Islamic mosque — at approximately 68,100 barleycorns on the 158th floor (of 163 floors) — and the world's tallest outdoor swimming pool — at approximately 33,700 barleycorns on the 78th floor.
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