Assume a class Triangle has been defined. It has three instance data, Point p1, p2, p3. The class also has a constructor that receives the 3 Points and initializes p1, p2, and p3, a toString method that outputs the 3 Points, and a computeSurfaceArea method that calculates the surface area of the Tetrahedron (as an int value). We want to extend this class to represent a 3-dimensional Tetrahedron (the Pyramid with triangle base), which consists of 4 Points. Since the Tetrahedron will consist of in essence, 4 triangles, computeSurfaceArea for the Tetrahedron will compute 4 * the surface area of the Triangle made up of 3 of those 4 Points. Write the Tetrahedron class to handle the difference(s) between a Tetrahedron and the previously defined Triangle. Assume the instance data of Triangle are protected and all methods are public. Also assume that the class Point has a toString method.

Consider the following statements: #include #include class temporary { private: string description; double first; double second; public: temporary(string = "", double = 0.0, double = 0.0); void set(string, double, double); double manipulate(); void get(string& , double& , double& ); void setdescription(string); void setfirst(double); void setsecond(double); }; write the definition of the member function set() so that the instance variables are set according to the parameters. write the definition of the constructor so that it initializes the instance variables using the function set() write the definition of the member function manipulate() that returns a decimal number (double) as follows: if the value of description is "rectangle", it returns first * second if the value of description is "circle" it returns the area of a circle with radius first if the value of description is "cylinder" it returns the volume of a cylinder with radius first and height second. hint: the volume of a cylinder is simply the area of the circle at the base times the height. if the value of description is "sphere" it returns the volume of the sphere with radius first. otherwise it returns -1.0;

Effective character encoding requires standardized code. compatible browsers. common languages. identical operating systems.

Which feature is selected to practice and save the timing of a presentation