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(2003•杭州)有一块长为a,宽为b的长方形铝片,四个角上剪去一个边长为x的相...
(2003•杭州)有一块长为a,宽为b的长方形铝片,四个角上剪去一个边长为x的相同的正方形后,折成一个无盖的盒子,则此盒子的容积V的表达式是( )
A.V=x
2(a-x)b(b-x)
B.V=x(a-x)(x-b)
C.V=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232310703619197/SYS201310212323107036191011_ST/0.png)
x(a-2x)(b-2x)
D.V=x(a-2x)(b-2x)
考点分析:
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