Answer
$16$
Work Step by Step
The volume of a solid can be calculated as:
$Volume, V= \int_{0}^{4} (y+2) \ dy \\=[\dfrac{y^2}{2} +2y]_0^4 \\=\dfrac{(4^2)}{2} +2(4) \\=[\dfrac{16}{2} +8] \\=8+8 \\=16$
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