Largest area enclosed by 16 matches

In the applet below, drag the match to move it, and drag its red head to turn it.[br][br]Explore with the applet the possible areas enclosed by the 16 matches. Record the areas in the table. [br][br][b]What is the largest area?[/b]
Largest area enclosed by 16 matches
Anthony Or. GeoGebra Institute of Hong Kong.

Information: Largest area enclosed by 16 matches