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11 May, 23:17

A room has a length of 12.62 ft and a width of 10.2 ft. Find the perimeter of the room with the correct number of significant digits.

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  1. 12 May, 00:53
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    45.6 ft

    Step-by-step explanation:

    The room is a rectangle. The perimeter of a rectangle is

    perimeter = 2L + 2W

    perimeter = 2 (12.62 ft) + 2 (10.2 ft)

    perimeter = 25.24 ft + 20.4 ft

    perimeter = 45.64 ft

    Since 10.2 ft has only 3 significant digits, the answer must also have only 3 significant digits.

    Answer: perimeter = 45.6 ft
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