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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?

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

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    I know who are you. The point of Brilliant is to improve your skills, not cheat and gain ill-deserved "prizes".

    Be ashamed of yourself.

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    64

  • maths -

    how 64 can you post process

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