this is a project that i worked on with a little help from my dad. no tutorials! it calculates the distance from the centre point, as well as another distance calculating only the X variable. the circle is a nice way to show that the formula works, by tracing around it and seeing how the distance doesn't change much, and by tracing the verticle line and seeing how the x distance doesnt change.
all by me! please give credit if you use, i worked really hard on it.