Is 4,900,000 cubic meters as big as The US Capitol Rotunda?
It's about 150 times as big as The US Capitol Rotunda
The size of The US Capitol Rotunda is about 37,000 cubic meters.
(formally United States Capitol rotunda) (Washington, D. C.) (total chamber volume)
The Capitol rotunda measures 37,000 cu. m in total volume. Beneath the Capitol lies a crypt that was built to hold the remains of President George Washington, but according to his wishes, Washington was entered at his family home and the crypt remains empty.
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