What’s the exact volume of the cylinder?

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Factor the polynomial. b^2 + 4b + 4

Solve for x where 0 equation: cot^2x+2cotx+1=0