In Parallelogram WXYZ, diagonals WY and XZ intersect at A. WA=x2−36 and AY=5x. What is WY?

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WY= ___ units

With alll of except for the 2 that i did already

George is putting trim around his rectangular deck, including the gate. he will need 44 feet of trim to do the entire deck. if the deck is 13 feet long, how wide is the deck?

Having a hard time understanding this question (see attachment).