<PRE><B>Question 189850</B>
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The area of a circle is given by:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  A_c = \pi r^2]


Solving for &lt;i&gt;&lt;b&gt;r&lt;/b&gt;&lt;/i&gt;


Divide both sides by &lt;i&gt;&lt;b&gt;&amp;#960;&lt;/b&gt;&lt;/i&gt;


*[tex \LARGE \ \ \ \ \ \ \ \ \ \    r^2 = \frac{A_c}{\pi}]


Take the positive square root:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \    r = sqrt{\frac{A_c}{\pi}}]


Now just substitute your given value for the area and do the arithmetic.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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