3. A circle of radius 60 touches three sides of quadrilateral $A B C D$: side $A B$ at point A, side $C D$ at point D, and side $B C$ at point $X$. It turns out that $\mathrm{BX}=20, \mathrm{CX}=45$. Find the area of the quadrilateral.
Answer: 2215.2

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