Find the area of the largest rectangle that can be inscribed in a circle of radius .

Note: This type of question is called Hybrid. In the final exam there will be no uploading options until you have finished the exam. Once you submit the exam, a QR-code will be promoted in the screen; proceed to scan the QR-code with your mobile, and then proceed to take pictures of your hybrid questions, and upload them. 

Please be aware of this difference between the mock exam and the actual final exam.