题目信息
In the figure above, the area of the shaded region is
A:
B:
C:
D:
E:
参考答案及共享解析
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已选答案：
正确答案：
D:
Geometry Triangles; Area
First, the diagonal of the square with sides of length 4 is
. From this it follows that the area of the shaded region consists of the area of an equilateral triangle with sides 
minus 
the area of a square with sides of length 4. Thus, the area of the shaded region is 
= 
.
The correct answer is D.
First, the diagonal of the square with sides of length 4 is
. From this it follows that the area of the shaded region consists of the area of an equilateral triangle with sides minus the area of a square with sides of length 4. Thus, the area of the shaded region is = .The correct answer is D.
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