满分5 >
初中数学试题 >
已知一个圆锥的底面半径长为3cm、母线长为6cm,则圆锥的侧面积是 cm2.
已知一个圆锥的底面半径长为3cm、母线长为6cm,则圆锥的侧面积是 cm2.
考点分析:
相关试题推荐
若
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726010_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726010_ST/1.png)
=
,分解因式:a
2b-2ab+b=
.
查看答案
计算:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726009_ST/0.png)
=
,a
4b÷a
2=
,
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726009_ST/1.png)
=
.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726008_ST/0.png)
的相反数是
,倒数是
,函数y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726008_ST/1.png)
的自变量x的取值范围是
.
查看答案
如图,C为⊙O直径AB上一动点,过点C的直线交⊙O于D,E两点,且∠ACD=45°,DF⊥AB于点F,EG⊥AB于点G,当点C在AB上运动时,设AF=x,DE=y,下列中图象中,能表示y与x的函数关系式的图象大致是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726007_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726007_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726007_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726007_ST/images3.png)
D.
查看答案
已知函数y=x
2-2x-2的图象如图所示,根据其中提供的信息,可求得使y≥1成立的x的取值范围是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193831033772621/SYS201311011938310337726006_ST/images0.png)
A.-1≤x≤3
B.-3≤x≤1
C.x≥-3
D.x≤-1或x≥3
查看答案