## How do you find the square root in Java?

Java. lang. Math. sqrt() Method

- Description. The java.lang.Math.sqrt(double a) returns the correctly rounded positive square root of a double value. …
- Declaration. Following is the declaration for java.lang.Math.sqrt() method public static double sqrt(double a)
- Parameters. a − a value.
- Return Value. …
- Exception. …
- Example.

## How do you find the square root of a number without using the square root function in Java?

FindSquareRootExample2.java

- import java.util.Scanner;
- public class FindSquareRootExample2.
- {
- public static void main(String[] args)
- {
- double number = 0, sqrt=0;
- //object of the Scanner class.
- Scanner sc = new Scanner(System.in);

## What is print () in Java?

print(): print() method in Java is used to display a text on the console. This text is passed as the parameter to this method in the form of String. This method prints the text on the console and the cursor remains at the end of the text at the console. The next printing takes place from just here.

## Is 20 a perfect square?

Is 20 a perfect square number? A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 20 is about 4.472. Thus, the square root of 20 is not an integer, and therefore 20 is not a square number.

## How do you call pi in Java?

An Example

- import java. lang. Math. *;
- public class Pie {
- public static void main(String[] args) {
- //radius and length.
- double radius = 5;
- double len = 15;
- // calculate the area using PI.
- double area = radius * radius * Math. PI;

## Is 18 a perfect square?

Is 18 a perfect square number? A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 18 is about 4.243. Thus, the square root of 18 is not an integer, and therefore 18 is not a square number.

## How do you find the root of 11?

To find the square root of 11, use the long division method to find the approximate value. Therefore, √11 = 3.31662479036.