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23 May, 08:03

Annie is making square shaped flags to cheer on the swim team. The length of the side of the square is given by the expression 2x + 4. Which of the following gives an expression for the perimeter of the square? 4x + 8 2x + 16 8x + 16 4x + 16 If x has a value of 5, what is the perimeter of the square? The perimeter is units. If x has a value of 3, what is the area of the square? Show all of your steps. Previous Powered by LinkIt!

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  1. 23 May, 10:53
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    Part 1:

    The parimeter of the square by definition is given by:

    P = 4L

    Substituting values:

    P = 4 (2x + 4)

    Rewriting we have:

    P = 8x + 16

    Part 2:

    For x = 5 we have:

    P = 8 (5) + 16

    P = 40 + 16

    P = 56

    Part 3:

    The area of the square is:

    A = L ^ 2

    Substituting values:

    A = (2x + 4) ^ 2

    For x = 3 we have:

    A = (2 (3) + 4) ^ 2

    A = (6 + 4) ^ 2

    A = (10) ^ 2

    A = 100
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