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Apply Pythagoras to the sides as inches, ie 285 and 190,

then diagonal = sqrt(2852 + 1902)

= sqrt (81225 + 36100)

= sqrt 117325

= 342.52 in

= 28 feet 6½ inches

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Q: What is the hypotenuse of a rectangle 23feet9inches by 15feet10inches?
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