Question

what does the nucleus use to communicate with its surrounding

Answer 1

It contains the DNA or genetic material through which has the necessary information for it to function. One of it's functions include communication.

Answer 2

The nucleus is the brain of the cell, and it gives directions to the surrounding organelles through the cytoplasm

Answer 3

What he said ^ But since the question was what the nucleus uses to do that, it's the genetic material and DNA within the nucleus.