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public class Circle { private double radius; / / constructors / / postcondition: the instance variable is initialized public Circle ( double rad ) {
public class Circle
private double radius;
constructors
postcondition: the instance variable is initialized
public Circledouble rad
radius rad;
postcondition: the instance variable is initialized
public Circleint diameter
radius diameter;
postcondition: returns the arcLength of a circle with radius equal to this
circle's radius, according to the formula: PI r deg,
where PI is the value of pi r is the radius of the circle,
and deg is the angle in degrees passed as the parameter.
Use the Math class constant to represent the value of pi
public double arcLengthdouble degree
return MathPI radius degree;
There may be other instance variables, constructors,
and methods that are not shown.
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