HYPOT function
HYPOT(x,y) returns the square root of the sum of squares of its arguments x and y. This corresponds to calculating the length of the hypotenuse of a right-angled triangle.
The HYPOT function is defined as:
$$ r = \sqrt { x^2 + y^2 } $$
$$ r = \sqrt { x^2 + y^2 } $$
Examples
HYPOT(3,4) equals 5
HYPOT(5,12) equals 13