Area and Perimeter > Pythagorean Theorem

# Pythagorean Theorem

This online calculator is a free online tool to help you in calculate Pythagorean Theorem.

## Formula

- c – hypotenuse

- a,b – right-angled legs

You may need: Area and Perimeter of Right-Angled Triangle

## Pythagoras Theorem

Pythagorean Theorem or Pythagoras Theorem is one of fundamental theorem and formulas in Mathematics. Pythagorean Theorem was found more than 2000 years ago by a Greek Philosopher and Mathematician named Pythagoras. Pythagorean Theorem states that “When a triangle has a right angle of 90^{o} and squares are made on each of three sides, then the biggest square has the exact same area as the others.”

## The formula of Pyhtagorean Theorem

a^{2}+b^{2}=c^{2}

**a** and **b** are the sides of triangle

**c** is the longest side/hypotenuse of the triangle

## The Instruction to use the Calculator Online to calculate the Pythagorean Theorem

1. First, input 2 values between (a, b) sides of triangle, or (c) hypotenuse

2. Next, you can choose what decimal places you need. It can 1 or 2 or whatever you want.

3. And then, click “Calculate Button” and the answer will automatically appear.

4. To count another number, just repeat the first step.

## Example of the usage of calculator online to count the Pythagorean Theorem

1. Example, enter “3” in “a”, and “4” in “b” to calculate hypotenuse.

2. Then click enter or “Calculate” button.

3. You will find the answer right there on the C (Hypotenuse) **5.00**.