110- import java.util.Scanner;
- public class JPA01 {
- public static void main(String args[]) {
- double totalarea;
- System.out.printf("圓形面積為:%f \n",calCircle(5));
- System.out.printf("三角形面積為:%f \n",calTriangle(10,5));
- System.out.printf("方形面積為:%f \n",calRectangle(5,10));
- totalarea = calCircle(5)+calTriangle(10,5)+calRectangle(5,10);
- System.out.printf("此圖形面積為:%f \n",totalarea);
- }
- static double calCircle(double x) {
- double total;
- total=5*5*3.1415926;
- return total;
- }
- static double calTriangle(double x,double y) {
- double total;
- total=x*y/2;
- return total;
- }
- static double calRectangle(double x,double y) {
- double total;
- total=x*y;
- return total;
- }
- }
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