Program to calculate distance between two points

You are given two coordinates (x1, y1) and (x2, y2) of a two-dimensional graph. Find the distance between them.

Examples: 

Input : x1, y1 = (3, 4)
x2, y2 = (7, 7)
Output : 5

Input : x1, y1 = (3, 4)
x2, y2 = (4, 3)
Output : 1.41421

Calculate the distance between two points.

We will use the distance formula derived from Pythagorean theorem. The formula for distance between two point (x1, y1) and (x2, y2) is
Distance = 
We can get above formula by simply applying Pythagoras theorem

Below is the implementation of above idea.

1.41421