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geometry

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one side of an equilateral triangle is 7 dm shorter than one side of square.the sum of the perimeter of the two figure is 49 dm . find the perimeter of each figure.

  • geometry - ,

    x = length of one side of a square
    x - 7 = length of one side of an equilateral triangle

    Equation:
    4x + 3(x - 7) = 49

    Solving for x:
    4x + 3x - 21 = 49
    7x - 21 = 49
    7x = 70
    x = 10

    Now you should be able to determine the perimeter of each figure.

    I hope this helps.

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