What is the distance between #(3, 0) # and #(0, 4) #?
It's 5 (Euclidean distance)
Use the Euclidean distance:
Note: The order of the coordinates inside the powers does not matter.
Understanding it: Geometrically speaking, draw a line between these two points in the Cartesian system. Afterwards, draw a vertical line and a horizontal line in each of the points. You can notice that they form 2 triangles which have a