Hi, I need help with the following question:

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, p3;a toString method that outputs the 3 Points; and a computeSurfaceArea method that calculates the surface area of the Triangle (as a double value).

We want to extend this class to represent a 3-dimensional Pyramid, which consists of 4 Points.Since the Pyramid will consist of, in essence, 4 triangles, computeSurfaceArea for the Pyramid will compute 4 times the surface area of the Triangle made up of 3 of those 4 Points.

Write the Pyramid class to handle the difference(s) between a Pyramid 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.