Find the radius of the circle whose center point is (-2,7) and a point on the circleis located at (5,3).
+37158 Distance formula between two points
d^2 = (x1-x2)^2 + ( y1-y2)^2
d^2 = (-2-5)^2 + ( 7-3)^2 d^2 is r^2 in this comp.......you can finish (I hope!) 
