class Sphere extends Circle {

    public Sphere() {
        super();
    }

    public Sphere( double radius, String color ) {
        super( radius, color );
    }

    public double calculateArea() {
        return super.calculateArea() * 4;
    }
}

class Cylinder extends Circle {

    private double height;

    public Cylinder() {
        super();
        height = 0.0D;
    }

    public Cylinder(double height) {
        super();
        this.height = height;
    }

    public Cylinder(double height, double radius, String color) {
        super(radius, color);
        this.height = height;
    }

    public double calculateArea() {
        return super.calculateArea() * height;
    }

    public double getHeight() {
        return height;
    }

    public void setHeight(double height) {
        this.height = height;
    }

    public String toString() {
        return super.toString() +
           "Height = " + height + "\n";
    }
}

class Trapezoid extends Shape {

    private double height;
    private double sideALength;
    private double sideBLength;

    public Trapezoid() {
        super();
        this.height = 0.0D;
        this.sideALength = 0.0D;
        this.sideBLength = 0.0D;
    }

    public Trapezoid(double height, double sideALength, double sideBLength) {
        super();
        this.height = height;
        this.sideALength = sideALength;
        this.sideBLength = sideBLength;
    }

    public Trapezoid(double height, double sideALength, double sideBLength, String color) {
        super(color);
        this.height = height;
        this.sideALength = sideALength;
        this.sideBLength = sideBLength;
    }

    public double getHeight() {
        return height;
    }

    public double getSideALength() {
        return sideALength;
    }

    public double getSideBLength() {
        return sideBLength;
    }

    public void setHeight(double height) {
        this.height = height;
    }

    public void setSideALength(double sideALength) {
        this.sideALength = sideALength;
    }

    public void setSideBLength(double sideBLength) {
        this.sideBLength = sideBLength;
    }

    public double calculateArea() {
        return 0.5 * height * (sideALength + sideBLength);
    }

    public String toString() {
        return super.toString() +
                "height = " + height +
                "Side A Length = " + sideALength +
                "Side B Length = " + sideBLength;
    }
}