maths
posted by harsh .
ABCD is a convex cyclic quadrilateral such that AB=AD and ∠BAD=90∘. E is the foot of the perpendicular from A to BC, and F is the foot of the perpendicular from A to DC. If AE+AF=16, what is the area of ABCD?

This problem is at an website (brilliant . org). Please don't answer this since the problem is open. Answer this the next week.

I know who are you. The point of Brilliant is to improve your skills, not cheat and gain illdeserved "prizes".
Be ashamed of yourself. 
64

how 64 can you post process