Find the segment length indicated. Round your answer to the nearest tenth if necessary. Please Explain.

The bystander effect  for some reason my history teacher was talking about this 

First of all you would die.   do not try this at home but back to the question.   there are six parts of the sun.   from the outside to the inside: corona, chromoshpere, photosphere, convective zone, radiative zone, and the core.   then use the dictionary or reliable sources such as wikipedia to find out what they do.   good luck.