package mathematics; import java.util.Scanner; import shapes.SSquare; public class SurfaceAreaOfCube { public static void main (String []args) { double edgeLength = edgeLength(); double surfaceArea = surfaceArea(edgeLength); System.out.println("surface area = " + surfaceArea); } private static double edgeLength () { System.out.println("Please enter the edge length of the cube: "); Scanner scanner = new Scanner (System.in); double edgeLength = scanner.nextDouble(); return edgeLength; } private static double surfaceArea(double edgeLength) { SSquare face = new SSquare(edgeLength); int nrOfFaces = 6; double surfaceArea = face.area() * nrOfFaces; return surfaceArea; } // you get a surface area of 337.5 when you enter 7.5 units // you get a surface area of 1006.2149999999999 when you enter 12.95 units }