125. The area of a regular octagon inscribed in a circle of radius $2$ is: (1) $8\sqrt{2}$ (2) $8(\sqrt{2}-1)$ (3) $4(1+\sqrt{2})$ (4) $4(2+\sqrt{2})$ %% Page 6
\textbf{125.} The area of a regular octagon inscribed in a circle of radius $2$ is:
\medskip
(1) $8\sqrt{2}$ \hfill (2) $8(\sqrt{2}-1)$ \hfill (3) $4(1+\sqrt{2})$ \hfill (4) $4(2+\sqrt{2})$
%% Page 6