The sector of a circle of radius and the central angle . \ \
Find the area.
The formula of the sector area for any central angle is
\ \
Where,
Substitute
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b8f0110b5e0bed11161c81916cf03024.png\")
and the central angle ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=883330d295a9281009d9876e43fb0892.png\")
. \ \
and the central angle . \ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3d4cdcdf9c92fe47a4c3648acf4d8acb.png\")
\ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bfdc83999aa3c9c62af909ec3c8c21f8.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2b8211e050816427508985a41756b5c9.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b5626a641dc1f16bcdacfff381afe584.png\")
\ \