Java编程不会求解答

Question

![img](https://img-mid.csdnimg.cn/re

lease/static/image/mid/ask/646278220276178.jpg "#left")

Answer 1

import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        float a,b,c;
        System.out.println("请输入菱形的对角线长度(米):");
        a=in.nextFloat();
        System.out.println("请输入菱形的另一条对角线长度(米):");
        b=in.nextFloat();
        System.out.println("请输入引导牌杆的长度(米):");
        c=in.nextFloat();
        System.out.printf("总的费用为：%.1f元",(a*b/2)*30+5*c);
    }
}