Question

A circle that is centered at the origin contains the point (0,4). How can you prove or disprove that the point (2,
6
) also lies on the circle? Does the point (2,
6
) lie on the circle?

Answer 1

what is the radius?

point 2,6 can only lie on the circle if the radius is sqrt(8)

Answer 2

The radius is 4. The diameter is 8