Now you have the time. Heres how we get from the one to the other. Find the radius of a circle given that the center is at 2 3 and the point 1 2 lies on the circle.
If you want to determine the distance between two points on a coordinate plane you use the distance formula D.
Instead you have to notice that you need to find the distance and then remember and apply the Formula. Suppose youre given the two points 2 1 and 1 5 and they want you to find out how far apart they are. The Distance Formula itself is actually derived from the Pythagorean Theorem which is. Distance Formula is used to calculate the distance between two points.