Contents

- 1 How do you find the square root in Java?
- 2 How do you do squares in Java?
- 3 How do you get the square root of a number?
- 4 What is NaN in Java?
- 5 How do you divide in Java?
- 6 How do I convert a string to an int?
- 7 How do you power a number in Java?
- 8 How do I reduce decimal places in Java?
- 9 IS 400 a perfect square?
- 10 Is 3 a square root?
- 11 What are the square roots from 1 to 20?

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

Method1: Java Program to Find the square root of a Number using java. lang. Math. sqrt () method

- Parameter: x is the value whose square root is to be returned.
- Return: This method returns the square root value of the argument passed to it.

## How do you do squares in Java?

Java: How to square a number

- 1) Square a number by multiplying it by itself. This is how you square a number by multiplying it by itself: int i = 2; int square = i * i;
- 2) Square a number with the Math. pow method.
- More power multipliers. In general I just multiply the number by itself to get the squared value, but the advantage of the Math.

## How do you get the square root of a number?

Finding the square root of a number is the inverse operation of squaring that number. Remember, the square of a number is that number times itself. The perfect squares are the squares of the whole numbers. The square root of a number, n, written below is the number that gives n when multiplied by itself.

## What is NaN in Java?

In Java, ” NaN ” stands for “not a number” and signifies that a value is not defined. ” NaN ” is not an exception error, but a value that is assigned. For example, imaginary numbers like the square root of negative numbers or zero divided by zero will both print ” NaN ” as the result. Take a look at the example below.

## How do you divide in Java?

// Divide a literal by a literal; result is 5 int result = 10 / 2; // Divide a variable by another variable; result is 3 int a = 15; int b = 5; int result = a / b; When dividing integer types, the result is an integer type (see the previous chapter for the exact data type conversions for mathematical operations).

## How do I convert a string to an int?

parseInt() to convert a string to an integer.

- Use Integer. parseInt() to Convert a String to an Integer. This method returns the string as a primitive type int.
- Use Integer. valueOf() to Convert a String to an Integer. This method returns the string as an integer object.

## How do you power a number in Java?

Read the base and exponent values from the user. Multiply the base number by itself and multiply the resultant with base (again) repeat this n times where n is the exponent value.

## How do I reduce decimal places in Java?

Approach 2: Using String matching approach

- Convert the number into String.
- Start the counter variable when “.” found in the String.
- Increment the counter till decimal point.
- Store the new String and parse it in double format.

## IS 400 a perfect square?

400 is a perfect square. Because 20 * 20 = 400.

## Is 3 a square root?

The process of multiplying a number times itself is called squaring. Numbers whose square roots are whole numbers, (or more accurately positive integers) are called perfect square numbers. List of Perfect Squares.

NUMBER | SQUARE | SQUARE ROOT |
---|---|---|

3 | 9 | 1.732 |

4 | 16 | 2.000 |

5 | 25 | 2.236 |

6 | 36 | 2.449 |

96

## What are the square roots from 1 to 20?

Between 1 to 20, the square roots of 1, 4, 9, and 16 are whole numbers (rational), while the square roots of 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, and 20 are decimal numbers that are neither terminating nor recurring (irrational).