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suppose there is a region bounded by the x axis, y axis and the line hx+ry=hr where h and r are constants and h,r >0. Use cylindrical shells to find the volume of the solid revolved about the y axis
R is the region bounded by y= sqrt of x ,y=0 , and x=4. Use the shell method to find the volume of the solid generated when R is revolved about the y-axis.
