# java code 7

arvind
java code 7
1 Answer(s)      6 years and 5 months ago
Posted in : JavaScript Questions

Develop the program calculatePipeArea. It computes the surface area of a pipe, which is an open cylinder. The program accpets three values: the pipes inner radius, its length, and the thickness of its wall.

December 24, 2010 at 12:33 PM

Hello Friend,

Try the following code:

```import java.util.*;
class CalculatePipeArea{
public static void main(String[] args)
{
double PI=3.14;
Scanner input=new Scanner(System.in);
double r=input.nextDouble();
System.out.print("Enter Length: ");
double h=input.nextDouble();
System.out.print("Enter thickness: ");
double d=input.nextDouble();
double R=d+r;
double area1=2*PI*r*h;
double area2=2*PI*R*h;
double a=Math.pow(R,2)-Math.pow(r,2);
double area3=2*PI*a;
double surfaceArea=area1+area2+area3;
System.out.println(surfaceArea);

}
}
```

Thanks

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