Volume generated by the area bounded by y=x, the xaxis and the lines x=0 and x=2 
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Volume = 8p units cubed 


Volume =

Volume generated by the area bounded by y=2, the xaxis and the lines x=0 and x=2  Volume generated by the area bounded by y=x+1, the xaxis and the lines x=1 and x=3  
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Volume = 