// prompt user for a number
let num = prompt(“Enter a number: “);
// calculate the square root
let sqrt = Math.sqrt(num);
// display the result
console.log(`The square root of ${num} is ${sqrt}.`);
In this program, we first prompt the user to enter a number using the prompt() function. We then use the Math.sqrt() function to calculate the square root of the number. Finally, we use console.log() to display the result to the user.
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