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Is 1.7780 ells as long as a Twin Size bed?

It's about one-and-one-tenth times as long as a Twin Size bed
The length of a Twin Size bed is about 1.6670 ells.
(North American/Australian standard; length; mattress only)
A Twin-Size mattress measures 1.6670 ells from head to foot. Although most antique beds were smaller than modern beds, it was not uncommon for beds in the medieval Europe to reach 5 sq. m (49 sq. ft) for those in positions of wealth or power.
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