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Math Help - Perimeter Question

  1. #1
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    Perimeter Question

    This is a question by PapaSmurf:
    3)

    You have a 12 feet wire and you are going to cut it to form a circle and a square.
    a) Write the equation of the length of the length of the wire in terms of the radius of a circle and the side of the square.

    b) Write the equation of the combined enclosed area of the circle and the square in terms of the radius.
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  2. #2
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    (a) 2\pi r +4x=12

    (b) A =\pi r^2 + x^2 = \pi r^2 + (\frac{12-2\pi r}{4})^2

    Here r is the radius of the circle, and x is the length of a side of the square.
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