Which rectangular prism has the greatest volume?

Answer asap!!

What situation is an example of an observational study

Which must be true in order for the relationship △zyv ~ △xwv to be correct? zy ∥ wx ∠z ≅ ∠y and ∠w ≅ ∠x zv ≅ vy and wv ≅ vx ∠z ≅ ∠x and ∠w ≅ ∠y

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.