console.js

// Write a JavaScript function to find the area of a triangle where lengths of the three of its sides are 5, 6, 7.

var side1 = 5; 
var side2 = 6; 
var side3 = 7; 
var perimeter = (side1 + side2 + side3)/2;
var area =  Math.sqrt(perimeter*((perimeter-side1)*(perimeter-side2)*(perimeter-side3)));
console.log(area);

const num1 = 5;
const num2 = 3;

// add two numbers
const sum = num1 + num2;

// display the sum
console.log('The sum of ' + num1 + ' and ' + num2 + ' is: ' + sum);


// store input numbers
const num1 = parseInt(prompt('Enter the first number '));
const num2 = parseInt(prompt('Enter the second number '));

//add two numbers
const sum = num1 + num2;

// display the sum
console.log(`The sum of ${num1} and ${num2} is ${sum}`);

var a = 12;
var b = 12; 
var c = 12;

console.log(a + b); 

console.log(a - b); 

console.log(a * b); 

console.log(a / b); 

console.log(a + b + c); 

//Write a JavaScript program to reverse a given string.

function string_reverse(str) 
{
    return str.split("").reverse().join("");
}

console.log(string_reverse("w3resource"));
console.log(string_reverse("www"));
console.log(string_reverse("JavaScript"));


// JavaScript Program to Find the Square Root

// take the input from the user
const number = prompt('Enter the number: ');

const result = Math.sqrt(number);
console.log(`The square root of ${number} is ${result}`);

// Example 2: Square Root of Different Data Types

const number1 = 2.25;
const number2 = -4;
const number3 = 'hello';

const result1 = Math.sqrt(number1);
const result2 = Math.sqrt(number2);
const result3 = Math.sqrt(number3);

console.log(`The square root of ${number1} is ${result1}`);
console.log(`The square root of ${number2} is ${result2}`);
console.log(`The square root of ${number3} is ${result3}`);

// Example 1: Area When Base and Height is Known

const baseValue = prompt('Enter the base of a triangle: ');
const heightValue = prompt('Enter the height of a triangle: ');

// calculate the area
const areaValue = (baseValue * heightValue) / 2;

console.log(
  `The area of the triangle is ${areaValue}`
);