CHECK PLZ HELP a little Determine the equation of the following locus. 1)-Locus of points that are 10 units from the origin. x^2+y^2=100? 2-The points 3 units from the circumference of the circle with centre (0, 0) and radius 5 units What does the 3 units from the circumference mean? is the equation x^2+y^2=25? Are these two correct Im not sure about the second one?