Similar Triangles Might Help?

Geometry Level 1

In the above diagram, ABCD\square ABCD is a square with side AD\overline{AD} extended to point EE, and BE\overline{BE} is a straight line. If the length of BC\overline{BC} is BC=a=30\lvert \overline{BC}\rvert = a=30 and CF=b=20,\lvert \overline{CF}\rvert =b= 20, what is the area of CEF?\triangle CEF?

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