满分5 >
初中数学试题 >
如图,一个空间几何体的主视图和左视图都是边长为1的正三角形,俯视图是一个圆,那么...
如图,一个空间几何体的主视图和左视图都是边长为1的正三角形,俯视图是一个圆,那么这个几何体的侧面积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277006_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277006_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277006_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277006_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277006_ST/3.png)
考点分析:
相关试题推荐
五根小木棒,其长度分别为7,15,20,24,25,现将它们摆成两个直角三角形,如图,其中正确的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277005_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277005_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277005_ST/images2.png)
D.
查看答案
某班七个兴趣小组人数分别为:3,3,4,x,5,5,6,已知这组数据的平均数是4,则这组数据的中位数是( )
A.2
B.4
C.4.5
D.5
查看答案
如图,在梯形ABCD中,AD∥BC,对角线AC⊥BD,且AC=5cm,BD=12cm,则梯形中位线的长等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277003_ST/images0.png)
A.7.5cm
B.7cm
C.6.5cm
D.6cm
查看答案
如果点A(x
1,y
1)和点B(x
2,y
2)是直线y=kx-b上的两点,且当x
1<x
2时,y
1<y
2,那么函数y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277002_ST/0.png)
的图象大致是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277002_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277002_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277002_ST/images3.png)
D.
查看答案
如图,阴影部分的面积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277001_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277001_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161845900227714/SYS201310221618459002277001_ST/1.png)
C.6xy
D.3xy
查看答案