What is the distance formula between two points (x1, y1) and (x2, y2)?

A. u221A[(x2 - x1)^2 + (y2 - y1)^2]
B. [(x1 + x2)^2 + (y1 + y2)^2]
C. (x2 - x1) + (y2 - y1)
D. None

Explanation:

The distance is the square root of the sum of squared differences.

Tags: SSC GD Constable , SSC