So you have to look at what Max Area sin(2theta) can be? So once you have that, you substitue 1 for sin(2theta) and that equals 25cm^2, which gives you the max area of the whole rectangle?
I see to find the Dimensions of the rectangle, I know that 2(theta)= 90º or pi/2, (theta)=45º or pi/4. How would I go about solving this part?
-Thank you very much skeeter for all your help by the way. Your the best <3