25% of the employees of department A and 16% of the employees of department B took part in a function. Participants from department A were 500 in number but 252 comployees of department B did not take part in the function. Find the total no. of employees in A and B.

A square sheet of paper is converted into a cylinder by rolling it along its length. What is the ratio of the base radius of cylinder to the side of the square?