JAVA - Computer.
1. Write a program that calculates sum of four numbers 7.9, 2.3, 8.8 and 13.5
2. Write a program how to calculate area of sphere with radius 7 cm.
3. Write a program to calculate volume of sphere whose radius is 7 cm.
Answers
Answer:
1. class numbers{
public static void main(String args[]){
double a=7.9+2.3+8.8+13.5;
System.out.println(a);
}
}
2.class sphere{
public static void main(String args[]){
double a=4*(22/7)*7*7;
System.out.println(a);
}
}
3. class volume{
public static void main(String args[]){
double a=(4/3)*(22/7)*7*7;
System.out.println(a);
}
}
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Required Answer :-
1. Write a program that calculates sum of four numbers 7.9, 2.3, 8.8 and 13.5.
Solution :-
public class Sum
{
public void Add()
{
double num1 = 7.9, num2 = 2.3, num3 = 8.8, num4 = 13.5;
double sum = num1 + num2 + num3 + num4;
System.out.println("The four numbers are:" + num1);
System.out.println("," + num2);
System.out.println("," + num3);
System.out.println("," + num4);
System.out.println("The sum is" + sum);
}
}
Output :-
The four numbers are: 7.9, 2.3, 8.8, 13.5
The sum is 32.5
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2. Write a program how to calculate area of sphere with radius 7 cm.
Solution :-
public class SurfaceArea
{
public void calcArea()
{
int r = 7;
double area, volume, pi = 3.14159;
System.out.println("The radius of sphere:" + r);
area = 4*pi*r*r;
System.out.println("The surface of sphere:" + area);
}
}
Output :-
The radius of sphere: 7
The surface area of sphere: 615.75164
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3. Write a program to calculate volume of sphere whose radius is 7 cm.
Solution :-
public class Volume
{
public void clacVolume()
{
double area, volume, pi = 3.14159;
System.out.println("Radius of sphere:" + r);
volume = 4/3*pi*r*r*r;
System.out.println("The volume of sphere:" + volume);
}
}
Output :-
Radius of sphere: 7
Volume of sphere: 1436:7538266666666
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