Java error cannot find symbol?

Thread title: Java error cannot find symbol?

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09-08-2011, 08:14 AM

jhonrtin

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Java error cannot find symbol?

/**
* Print to the screen.
*
* @author Beginner.
*/
public class Mag {

public static void main(String[] args) {

double circumference = 2 * Math.PI * radius;

System.out.println ("slant height (s): " + circumference);

}
}

I get:
Beginner.java:13: error: cannot find symbol
double circumference = 2 * Math.PI * radius;
......................................… ^

symbol: variable radius
location: class Beginner

Please help!
Thanks
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