Solve the following complex number problems.
The complex numbers 
and 
are the vertices of the quadrilateral in the complex plane. Calculate the volume of the body 
produced by rotating this figure by 
around its side. Calculate the volume of the body 
produced by rotating this figure by around its diagonal.
Calculate 
For each natural number n calculate 
We randomly select a natural number 
. Calculate the probability of the event A being true 
