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Math Help - Circle Within Square

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    Circle Within Square

    A circle of radius r is inscribed in a square.

    (a) Express the area A of the square as a function of the radius r of the circle.

    (b) Express the perimeter p of the square as a function of r.
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  2. #2
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    Quote Originally Posted by blueridge View Post
    A circle of radius r is inscribed in a square.

    (a) Express the area A of the square as a function of the radius r of the circle.

    (b) Express the perimeter p of the square as a function of r.
    C'mon. Draw a picture of this. You'll easily see that the diameter of the circle is the same length as a side of the square. You can do the rest from there.

    -Dan
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