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                                 L_CIRCAN()


Syntax:        L_CIRCAN(<expN1>,<expN2>)


Purpose:       To calculate area of a circular annulus.



Arguments:     <expN1> is the radius of the small circle.

               <expN2> is the radius of the large circle


Returns:       The area of the circular annulus formed by the two
               circles.


Examples:      ? L_CIRCAN(3.5,4.5)           && Result: 25.1327


Language:      C

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