daerah di antara busur

\path[pattern color=DarkSlateGray,pattern=north west lines,opacity=.5] (R)--(O)--(Q) arc[radius=3,start angle=-135,delta angle=-45]--(G) arc[radius=3,start angle=0,delta angle=-45]-- cycle; %daerah OQGR
\path[pattern color=DarkSlateGray,pattern=north west lines,opacity=.5] (P)--(O)--(S) arc[radius=3,start angle=45,delta angle=-45]--(E) arc[radius=3,start angle=-180,delta angle=-45]-- cycle; %daerah OSEP