Find the area of each figure. Use 3.14 for pi

In the 30-60-90 triangle below side s has a length of and side r has a length

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?

Evaluate cos2θ for cosθ = square root of 3/2