Answer
$18\pi$
Work Step by Step
If y=0, then x=1, x=34, so that a=1, b=4. The volume is
$V=\int^{4}_{1}\pi(\sqrt 2x +1)^{2}dx=\pi[\frac{(2x+1)^{2}}{4}]^{4}_{1}=18\pi$
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