单项选择题

In the figure above，if the area of the inscribed rectangular region is 32，then the circumference of the circle is（）

A.A
B.B
C.C
D.D
E.E

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单项选择题
In the rectangular coordinate system above，for how many of the points that lie inside or on the boundary of the shaded region are both coordinates integers（）

A. Six
B. Seven
C. Eight
D. Nine
E. Ten
单项选择题
In the figure above，what is the length of AB（）

A.A
B.B
C.C
D.D
E.E
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