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9 December, 17:44

The rectangular projection screen in the school auditorium is 5 times as long and 5 times as wide as the rectangular screen in the library. The screen in the library is 4 feet long with a perimeter of 14 feet. What is the perimeter of the screen in the auditorium

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  1. 9 December, 17:55
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    Library: length 4, width 3 = 4 (2) + 3 (2) = 14

    Take the length and width and multiply them by 5.

    4*5=20 and 3*5=15

    20 (2) + 15 (2) = 70

    The perimeter of the auditorium screen is 70.
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