已知扇形的圆心角为120°，面积为12π，则扇形的半径是．

Answer 1

根据扇形的面积公式，得
R=√((360S)/(nπ))=√((360×12π)/(120π))=6，
故答案为6． √((360S)/(nπ))

(360S)/(nπ)

(360S)/(nπ)(360S)/(nπ)360S360S360Snπnπnπ=√((360×12π)/(120π))=6，
故答案为6． √((360×12π)/(120π))

(360×12π)/(120π)

(360×12π)/(120π)(360×12π)/(120π)360×12π360×12π360×12π120π120π120π=6，
故答案为6．