public class sphere extends Shape {
private double r;
public sphere(String color, double a, double c, double r) {
super (color);
volume();
surfaceArea();
this.r = r;
}
public void volume () {
volume = (4/3) * super.pi * Math.pow(r, 3);
}
public void surfaceArea() {
surfaceArea = 4 * super.pi * Math.pow(r, 2);
}
}