满分5 >
初中数学试题 >
如图,两正方形彼此相邻且内接于半圆,若小正方形的面积为16cm2,则该半圆的半径...
如图,两正方形彼此相邻且内接于半圆,若小正方形的面积为16cm
2,则该半圆的半径为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017007_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017007_ST/0.png)
cm
B.9 cm
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017007_ST/1.png)
cm
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017007_ST/2.png)
cm
考点分析:
相关试题推荐
如图,点A的坐标为(-1,0),点B在直线y=x上运动,当线段AB最短时,点B的坐标为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017006_ST/images0.png)
A.(0,0)
B.(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017006_ST/0.png)
,-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017006_ST/1.png)
)
C.(-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017006_ST/2.png)
,-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017006_ST/3.png)
)
D.(-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017006_ST/4.png)
,-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017006_ST/5.png)
)
查看答案
如图,在△ABC中,DE∥BC,DE分别与AB、AC相交于点D、E,若AD=4,DB=2,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017005_ST/0.png)
的值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017005_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017005_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017005_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017005_ST/3.png)
D.
查看答案
如图,已知半圆的直径AB=2a,C、D把弧AB三等分,则阴影部分的面积为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017004_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017004_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017004_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017004_ST/2.png)
D.
查看答案
若一个几何体的三视图如下图所示:则这个几何体是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017003_ST/images0.png)
A.三棱柱
B.四棱柱
C.五棱柱
D.长方体
查看答案
方程x
2+2x-1=0的根可看出是函数y=x+2与y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017002_ST/0.png)
的图象交点的横坐标,用此方法可推断方程x
3+x-1=0的实根x所在范围为( )
A.-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017002_ST/1.png)
B.0
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017002_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185840494701770/SYS201311011858404947017002_ST/3.png)
D.1
查看答案