public class Sphere {

    // entity reference
    CalculateArea cl;
    double pi = 3.14;
    int radius;

    // constructor
    Sphere(int radius) {
        this.radius = radius;
    }
    double surfaceArea() {
        cl = new CalculateArea();
        int myCube = cl.cube(radius);
        return 4.0 * pi * myCube;
    }
}