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如图,BE是半径为6的圆D的圆周,C点是上的任意一点,△ABD是等边三角形,则四...
如图,BE是半径为6的圆D的
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103100835090170072/SYS201311031008350901700005_ST/0.png)
圆周,C点是
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103100835090170072/SYS201311031008350901700005_ST/1.png)
上的任意一点,△ABD是等边三角形,则四边形ABCD的周长P的取值范围是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103100835090170072/SYS201311031008350901700005_ST/images2.png)
A.12<P≤18
B.18<P≤24
C.18<P≤18+6
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103100835090170072/SYS201311031008350901700005_ST/2.png)
D.12<P≤12+6
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103100835090170072/SYS201311031008350901700005_ST/3.png)
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