There is no value because the det, der has not been create QUESTION 3 Part 1: Design and implement a class called Sphere that contains instance data that represents the sphere's diameter The Sphere also includes the following: A constructor to accept and initialize the diameter, . A default constructor to initialize sphere's diameter to 1, - A copy constructor getter and setter methods for the diameter . Methods that calculate and return the volume and surface area of the sphere A toString method that returns a one-line description of the sphere to include diameter, Surface Area and Volume An equals method to compare diameters of the spheres and if they are the same the spheres are identical otherwise not. Needed formulas: volume - where r = Radius and Radius = Diameter / 2 . Surface area=417? Where r = Radius Part 2: Create a driver class called MultiSphere, whose main method instantiates and updates several Sphere objects and prints them to the monitor For the toolbar, press ALT+F10 (PC or ALT-FN+F10 (Mac). Paragraph Arial 14px AY LI % OO QE one and submit Click Save All Answers to save all answers