Correction for the size of an IMAX screen
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How big is 569 square perches?
It's about 40 times as big as an IMAX screen
The size of an IMAX screen is about 14 square perches.
(standard)
An IMAX movie theater screen measures 22 m (72 ft) by 16 m (52 ft) for a total area of 14 square perches. Because the film used in an IMAX movie is more than eight times larger than regular film, the platters of a two-and-a-half hour feature film can weigh up to 250 kg (550 lbs).