Create a program that ask for a radius of a circle and has t

Create a program that ask for a radius of a circle and has the ability to return both the Area and Circumference - so methods called getArea() and getCircumferance() Create a program that ask for a 2 sides of a right triangle and calculate the hypotenuse and gives the angles of the two sides - ArcTan (o/a) = > angle Create a program that will ask for both gallons used and mileage travelled; calculate the MPG.

Solution

1)import java.util.*;
public class cheggmesure {
   public static void main(String[] args) {
       Scanner sc=new Scanner(System.in);
       System.out.println(\"enter radius:\");
       int radius=sc.nextInt();
       float cirucumfrenace=getCircumferace(radius);
       System.out.println(\"circumferace is:\"+cirucumfrenace);
       float area=getArea(radius);
System.out.println(\"area is:\"+area);
   }

   private static float getArea(int radius) {
       int r=radius;
       float area=3.14f*r*r;
       return area;
   }

   private static float getCircumferace(int radius) {
       int r=radius;
       float diameter=2*r;
       float circumferance=3.14f*diameter;
       return circumferance;
   }

}

2)

import java.util.*;
public class cheggexam {
   public static void main(String[] args) {
       Scanner sc=new Scanner(System.in);
       System.out.println(\"enter first side\");
       int side1=sc.nextInt();
       System.out.println(\"enter second side\");
       int side2=sc.nextInt();
       int res=side1*side1+side2*side2;
       double thirdside=Math.sqrt(res);
       System.out.println(\"hypotenus is\"+res);
   double angle=   Math.tanh(side2/side1);
   System.out.println(\"theta is\"+angle);

   }

}

3)

import java.util.*;
public class cheggexam {
   public static void main(String[] args) {
       Scanner sc=new Scanner(System.in);
       System.out.println(\"enter milage1:\");
       float milage1=sc.nextFloat();
       System.out.println(\"enter milage2:\");
       float milage2=sc.nextFloat();
       System.out.println(\"enter gallon:\");
       float gallon=sc.nextFloat();
       float mpg=(milage2-milage1)/gallon;
       System.out.println(\"the MPG is:\"+mpg);
   }

}