The length of a line can be calculated with the distance formula, which looks like this:
Distance is the square root of the change in x squared plus the change in y squared, where two points are given in the form (x1, y1) and (x2, y2). The distance formula is an example of the Pythagorean Theorem applied, where the change in x and the change in y correspond to the two sides of a right triangle, and the hypotenuse is the distance being computed.
Following Excel's order of operations, the change in x and the change in y is calculated, then squared, and the two results are added together and delivered to the SQRT function, which returns the square root of the sum as a final result:
=SQRT((D5-B5)^2+(E5-C5)^2) =SQRT((6)^2+(8)^2) =SQRT(36+64) =SQRT(100) =10
The POWER function can also be used instead of the exponent operator (^) like this:
with the same result.