I have been struggling with this questions for some time now and I have no idea how to start it. Can you guys give me some tips?

"

*A large circular dartboard is set up with a "bullseye" at the center of the circle, which is at the coordinate (0,0). A dart is thrown at the center but lands at (X,Y), where X and Y are two different Gaussian random variables. What is the average distance of the dart from the bullseye?*"

By average distance I assume when you cast about 1000 times. I know a gaussian random variable can have values from the standard normal distribution. But how do I calculate the average distance?

I am using matlab to solve it. Or im trying atleast.