Math

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a square painting is surrounded by a 2.5cm frame. if the total are of the painting plus frame is 3600 sq cm, find the dimensions of the painting.
what are the dimensions? i forgot how to find the dimensions. please help me .

  • Math -

    Since the painting is square, the length of each side of the painting, a, is such that

    (a + 5)^2 = 3600 cm^2
    a + 5 = 60 cm
    a = 55 cm

    The "5" in that equation is the width of two frame borders that must be added to the painting dimension

  • Math -

    what's ^2 ? :)

  • Math -

    could you do it in a RESC form?

  • Math -

    No to the RESC form, whatever that is.
    The logic of the method should be apparent.

    ^2 means "squared". The ^ in front of the 2 means that the 2 is an exponent.

  • Math -

    representation, equation, solution and conclusion.

  • Math -

    is that true? the answer, how old are you two?

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