private int a,b;

public Rectangle(int aa, int bb) {a=aa; b=bb;}

public int area() {return a*b;}

public int girth() {return 2*(a+b);}
}

public class XXK3 extends Rectangle {

private int c;

public XXK3(int aa, int bb, int cc) {super(aa,bb); c=cc;}

public int volume() {return area()*c;}

public int arrisLength() {return 2*girth()+4*c;}

public static void main(String args) {

XXK3 x=new XXK3(2,3,4);

int y1=x.volume();

int y2=x.arrisLength();

System.out.println(y1+", "+y2);

}
}(单选题)
.24, 36.,.
34, 36