Working out distance between objects

So how would I find the distance between two objects for a start off.

And then I would like to learn how to find the closest object instance.

Thanks for your time!

Distance Formula:
SQR((X(“Obj1”)-X(“Obj2”))*(X(“Obj1”)-X(“Obj2”))+(Y(“Obj1”)-
Y(“Obj2”))*(Y(“Obj1”)-Y(“Obj2”)))

Marv

e.g. Pythagoras.
a²+b²=c².

Thanks nivram, really appreciated your help.

How do I use this, what code?

I've worked out how to use this, it's okay now thanks.

Glad you figured it out and good luck on your project.

Marv