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20 June, 16:13

If x is the length of one side of the painting what equation can you set up to find the length of a side?

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  1. 20 June, 18:32
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    Answer: This equation has 2 solutions, namely x = ±√400 = + 20 or - 20

    The negative solution does not make sense because a length cannot be less than 0.

    The total length needed to go around the painting is the perimeter of the square, which is

    P = 4*x = 4*20 = 80 inches
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