满分5 >
初中数学试题 >
(2003•成都)已知⊙O1和⊙O2的半径分别是5cm和7cm,圆心距O1O2是...
(2003•成都)已知⊙O1和⊙O2的半径分别是5cm和7cm,圆心距O1O2是3cm,那么这两个圆的位置关系是( )
A.外离
B.外切
C.相交
D.内切
考点分析:
相关试题推荐
(2005•菏泽)已知两圆的半径恰为方程2x
2-5x+2=0的两根,圆心距为2
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621026_ST/0.png)
,则这两个圆的外公切线有( )
A.0条
B.1条
C.2条
D.3条
查看答案
(2009•衡阳)两圆的圆心距为3,两圆的半径分别是方程x
2-4x+3=0的两个根,则两圆的位置关系是( )
A.相交
B.外离
C.内含
D.外切
查看答案
(2001•重庆)已知,在△ABC中,∠C=90°,斜边长为
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621024_ST/0.png)
,两直角边的长分别是关于x的方程
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621024_ST/1.png)
的两个根,则△ABC的内切圆面积是( )
A.4π
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621024_ST/2.png)
π
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621024_ST/3.png)
π
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621024_ST/4.png)
π
查看答案
(2001•荆州)已知:如图⊙O的割线PAB交⊙O于点A,B,PA=7cm,AB=5cm,PO=10cm,则⊙O的半径是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621023_ST/images0.png)
A.4cm
B.5cm
C.6cm
D.7cm
查看答案
(2001•嘉兴)已知⊙O的半径是4,P是⊙O外的一点,且PO=8,从点P引⊙O的两条切线,切点分别是A,B,则AB=( )
A.4
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621022_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433762177/SYS201310212326484337621022_ST/1.png)
D.
查看答案