可以帮我修改一下这个代码吗非常感谢

Question

public class AreaUtil{
public float area (float length){
return lengthlength;
}
public float area (float length,float width){
return lengthwidth;
}
public float area(float a,float b,float c){
return (a+b+c)/2;
}
public static void main(String[] args) {
AreaUtil au=new AreaUtil();
au(4.0f);
System.out.println("正方形的面积为："+area);
au(4.0f,2.0f);
System.out.println("正方形的面积为："+area);
au(2.0f,3.0f,4.0f);
System.out.println("正方形的面积为："+area);
}
}

Answer 1

au(4.0f)改为 float area = au.area(4.0);，后面两个类似修改