Find the missing dimension of the cone round to the nearest tenth volume=3.6 in and height 4.2 in .what is the diameter

Matteo makes raspberry punch. the table shows how many parts ginger ale and raspberry juice to use for a batch. raspberry punch parts ginger ale 2 parts raspberry juice 3 matteo decides to add one part of raspberry juice. what is the new ratio of ginger ale to raspberry juice?

I'm terrible at math any here is appreciated.

What is the product? (x2+3y+7) [yy+1)