Hi i NEED HELP , I am confused

Problem 1.

problem 2.

The next four questions will concern the following problem What two positive real numbers whose product is 50 have the smallest possible sum? Let x and y be the two positive real numbers Let xy What is x ? Round to 4 decimal places. Question 4 Let xy What is y? Round to 4 decimal places. The next four questions will concern the following problem Find the radius and height of a cylindrical soda can with a volume of 354 cubic cm that minimize the surface area. What is the radius of this optimal soda can? Please round your answer to 4 decimal places Question 8 What is the height of this optimal soda can? Please round your answer to 4 decimal places