GRE
ST
10
The area of the sector OAC
4$$\sqrt{2}$$π
The area of sector ABD with C at the center
The area of ACE
The length of arc ABC
The length of arc XYZ
The area of the shaded region
The area of the semi-circle OCB with OB as its diameter
The area of ΔAOB
The area of shaded part
25000 +道题目
198本备考书籍