Page 134 - ComputerScience_Class_11

F. Write the java program for the following:
1. Write a program to input the principal amount, rate of interest and time and then calculate the compound interest.
The program should produce the following output:
Enter the principal amount: 1000
Enter the rate of interest: 5
Enter the time (in years): 5
The compound interest is: 276.281582500003
2. Write a program to input two integer numbers and print their multiplication.
The program should produce the following output:
Enter the first integer: 5
Enter the second integer: 6
The multiplication of 5 and 6 is: 30
3. Write a program to input the radius of a circle and calculate its area.
The output should be as follows:
Enter the radius of the circle: 7
Radius: 7.0
Area of the circle: 153.86
G. Find the output of the following programs:
1. class Triangle {

int base, height, area;
void calculateArea() {
area = (base * height) / 2;

}
public static void main(String[] args) {
Triangle t = new Triangle();
t.base = 5;
t.height = 4;
t.calculateArea();
System.out.println("Area of the triangle: " + t.area); // Output the calculated area
}
}
2. import java.util.Scanner;

class Circle {
double radius, circumference;
void calculateCircumference() {
circumference = 2 * Math.PI * radius;
}
void display() {

System.out.println("Radius: " + radius);
System.out.println("Circumference of the circle: " + circumference);
}
public static void main(String[] args) {

132 Touchpad Computer Science (Ver. 3.0)-XI