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11 November, 17:41

The radius r of a circle can be written as a function of the area A with the following equation: r = sqrt (A/pi) What is the domain of this function? Explain why it makes sense in this context.

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  1. 11 November, 20:41
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    The domain of the function is / [A / ge0/] If A is negative we get an imaginary number for the radius. This makes sense because the area of a circle cannot be negative.
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