Find the area and volume of a prism

In geometry, a prism is a polyhedron with an n-sided polygonal base, a translated copy (not in the same plane as the first), and n other faces (necessarily all parallelograms) joining corresponding sides of the two bases. All cross-sections parallel to the base faces are the same. Prisms are named for their base, so a prism with a pentagonal base is called a pentagonal prism. The prisms are a subclass of the prismatoids.

class Prism{
 String name;
     double a=2;
     double r=4;
     double h=5;
     double l=6;
 void calculate(){
  System.out.println(3*a*l+a*h);
 }
 void calculate1(){
  System.out.println((a*h*l)/2);
 }
}
class CalPr{
 public static void main(String args[]){
  Prism pr1=new Prism();
  pr1.name="Prism-Area";
  System.out.println(pr1.name);
  pr1.calculate();

 Prism pr2=new Prism();
  pr2.name="Prism-Volume";
  System.out.println(pr2.name);
  pr2.calculate1();
    }

}