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10 January, 12:24

The perimeters of the square and the regular pentagon are equal. A square with side lengths of 3x + 3. A pentagon with side lengths of x + 8.

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  1. 10 January, 13:41
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    60

    Step-by-step explanation:

    Since the perimeters are equal then:

    (3x + 3) * 4 = (x + 8) * 5

    12x + 12 = 5x + 40

    7x = 28

    x = 4

    Perimeter of square = (3*4 + 3) * 4 =

    (12 + 3) * 4 = 60

    Perimeter of pentagon = (4 + 8) * 5 =

    (12) * 5 = 60

    The answer is 60
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